The Chicago Cubs traded first baseman Garrett Cooper to the Boston Red Sox for cash considerations on Saturday. The Red Sox will be taking on the remainder of Cooper's $1.75 million salary for 2024. Cooper was designated for assignment by the Cubs earlier in the week. Boston has been decimated by injuries to start the season, including their starting first baseman Triston Casas who suffered a torn cartilage in his ribs last week. That injury spurred the need for Boston to add a first baseman to the roster and Garrett Cooper appears to be their man, at least in the immediate future. Cooper slashed .270/.341/.432 in 41 PA for the Cubs, a line that easily exceeds the production the Red Sox are seeing from Bobby Dalbec. Fantasy managers should grab Cooper off the waiver wire as he should be thrust into a starting role fairly quickly.

Chicago Cubs left-hander Justin Steele (hamstring) is moving on to the next step of his rehab and is likely to pitch for Triple-A Iowa on Wednesday, according to skipper Craig Counsell. The 28-year-old tossed 47 pitches in an extended spring game in Arizona on Friday and has seemingly come out of the outing feeling fine. The southpaw tossed 4 2/3 innings of one-run ball on Opening Day against the Texas Rangers but suffered a hamstring strain that has cost him significant time. Steele was in Cy Young contention for much of the 2023 season before struggling late in the year but still posted a 3.06 ERA and a 19.6% K-BB% on the back of an elite 5% BB% across 30 starts a season ago.

The New York Mets have placed outfielder Starling Marte on the bereavement list while infielder Mark Vientos has been recalled from Triple-A Syracuse to take his spot on the active roster. The 35-year-old has been off to a hot start this season, hitting .288 with four home runs, six stolen bases, and a .769 OPS across 111 trips to the plate, good for a 119 wRC+ that sits 19% above the league average. Marte plummeted down draft boards after a 2023 season that saw him hit .248 with only five homers alongside 24 stolen bases and a .625 OPS across 86 games in 2023, by far the worst offensive season of his career. However, he has rewarded managers who bet on a bounce back in drafts this spring.

New York Mets outfielders Harrison Bader and Starling Marte are both out of Saturday's lineup. As a result, Tyrone Taylor will play in center field and bat seventh, and DJ Stewart will man right field and bat fifth. Bader has put up a solid .267 AVG during his first month in Queens but will get a breather since he has not registered a hit in his past three games. Marte, who has been off to a great start with a .288 AVG and four home runs, will miss his first game of the season. Both Taylor and Stewart have a tough matchup today as they will face Sonny Gray, who enters Saturday with a dominant 1.04 ERA and 0.87 WHIP, and both will be popular fades in DFS.

Boston Red Sox right-hander Nick Pivetta (elbow) is scheduled to throw live batting practice on Saturday and will throw 50 pitches. As long as Pivetta doesn't suffer any setbacks with his elbow during the session, he should embark on a minor-league rehab assignment next week. It remains to be seen how many rehab starts the Red Sox want him to make, but he's clearly making progress and could be back in the team's starting rotation sooner than later. The 31-year-old has been sidelined since early April with a right-elbow flexor strain but was looking great before his injury. In his two starts for Boston in early April, Pivetta had a 0.82 ERA and 0.82 WHIP with 13 strikeouts in 11 innings pitched while going 1-1. Fantasy managers that drafted him need to hang onto him with his return around the corner.

Arizona Diamondbacks right-hander Zac Gallen (hamstring) left his start early on Friday against the Seattle Mariners with hamstring tightness, but after the game, both manager Torey Lovullo and Gallen were optimistic that it was just a cramp or spasm. Gallen thinks he might even be able to make his next start. "I didn't feel like it was really too severe, honestly," Gallen said. His next test will come Monday, when he's scheduled to throw his between-starts bullpen session. It's good news that both Gallen and the team don't think his injury are very serious, but it doesn't mean he won't eventually land on the injured list. The 28-year-old gave up three earned runs in five-plus innings on Friday and now has a 3.38 ERA in six starts. If he does make his next scheduled start next Wednesday against the Dodgers, he'll be extra risky in fantasy in a tough matchup.

Los Angeles Dodgers third baseman Max Muncy, shortstop Gavin Lux and outfielder Josh Outman, who all hit left-handed, are out of Saturday's lineup against left-hander Yusei Kikuchi and the Toronto Blue Jays. Enrique Hernandez will play third and bat sixth, Miguel Rojas is at shortstop and hitting eighth, and rookie Andy Pages is in center field and will bat seventh for the Blue. Muncy is hitting a modest .258 (23-for-89) this year with five home runs and 18 RBI, but he's gone just 5-for-25 (.200) with one homer and 10 strikeouts against lefties. Lux has struggled in general, hitting .183 (13-for-71) and has yet to go deep. Outman's fantasy stock has really fallen as he's fallen into a platoon with Pages. Hernandez is the DFS play to consider with a .256 career average and 55 homers in 1,417 plate appearances against southpaws. He's also hitting .308 in 13 career at-bats against Kikuchi.

Los Angeles Dodgers catcher Will Smith went 4-for-5 in Friday's 12-2 victory over the Blue Jays, with two of his four hits going for extra bases, including a double and his second home run of the season. The 2023 All-Star also drove in three runs and scored three times. This was the second straight game Smith has recorded four hits, raising his season slash line to .376/.413/.527 and putting himself in position as the third-highest-scoring backstop for fantasy thus far. The Dodgers face Jays left-hander Yusei Kikuchi on Saturday night. Smith is hitting a scorching .520/.581/.680 against lefties so far this season and is 1-for-3 off Kikuchi in his career.

Chicago Cubs starting pitcher Justin Steele (hamstring) threw 47 pitches in 2 1/3 innings in an extended spring game on Friday in Arizona. Steele will continue his rehab program there for now, but pitching coach Tommy Hottovy said on Thursday that the hurler should be able to start shifting into a five-day routine following his recent period of building up his workload. The 28-year-old star left-hander is recuperating from a strained left hamstring, and while it's unclear how long his rehab stint will last, Steele might be able to get back into Chicago's rotation in early May if all continues to go well in his recovery. Rookie right-hander Ben Brown has shown some promise with a 3.72 ERA (2.88 FIP), 1.03 WHIP, and 18:6 K:BB over 19 1/3 innings (six appearances) for the Cubs, and he'll be a decent streaming option for fantasy managers in Saturday's scheduled start against the Boston Red Sox.

The Arizona Diamondbacks announced that starting pitcher Zac Gallen (hamstring) left Friday's start against the Seattle Mariners due to tightness in his right hamstring. Before exiting, Gallen surrendered three runs on three hits and one walk with three strikeouts over five innings of work. He was pulled from the game after his 64th pitch in the sixth inning and relieved by Scott McGough. Although the extent of the setback won't be known until Gallen is evaluated further, the D-backs and fantasy managers should be relieved the ace isn't dealing with an injury to his throwing arm. It remains to be seen if Gallen will need a trip to the injured list, or if he'll just need his next turn in the rotation skipped, but his next start is tentatively slated for Wednesday's series finale versus the division-rival Los Angeles Dodgers. The 28-year-old workhorse right-hander owns a 3.38 ERA, 1.22 WHIP, and 35:9 K:BB over 32 frames (six starts) this year.

Arizona Diamondbacks closer Paul Sewald (oblique) is scheduled to throw a bullpen session on Saturday, and the team will likely have him appear in another rehab game if all goes well there. There was some optimism that Sewald's next appearance would come for the major-league club, but it sounds like fantasy managers will have to wait a few more days before the hurler is reinstated from the 15-day injured list due to a strained left oblique. Look for the 33-year-old right-hander to re-enter Arizona's bullpen and reclaim his closing gig sometime during Week 5 of fantasy baseball, which begins on Monday with a three-game series versus the division-rival Los Angeles Dodgers. Righty Kevin Ginkel owns a solid 3.48 ERA (2.85 FIP), 1.16 WHIP, and 11:2 K:BB with four saves through 10 1/3 innings, but fantasy managers should be trying to make other arrangements for saves before he reverts to a setup role upon Sewald's return.

Los Angeles Angels third baseman Anthony Rendon (hamstring) said he has a high-grade partial tear of his left hamstring and doesn't have a timetable to return. The Angels placed Rendon on the 10-day injured list on Sunday, but the 33-year-old is certainly going to be out for an extended amount of time. Ever since signing a seven-year deal with the Halos, Rendon has mostly been in the trainer's room and has been one of the biggest disappointments in baseball after recording a league-high 126 RBI and a career-high 34 home runs in his final year with the Nationals in 2019. Before the injury, he was hitting .267 (20-for-75) with no homers, three RBI and three steals. We wouldn't blame you for dumping Rendon to the waiver wire at this point. Miguel Sano has been playing third since Rendon went down, but Brandon Drury could also see time there moving forward.

Kansas City Royals starting pitcher Seth Lugo continued his stellar work on the mound during Friday's game against the Detroit Tigers. The right-hander threw seven shutout innings while striking out nine batters in the win. Lugo only gave up three singles during this game and a pair of walks. He holds a 1.66 ERA, 1.11 WHIP, and a 23/9 K/BB ratio across six starts. He'll look to continue his strong campaign against the Toronto Blue Jays next week.

San Diego Padres third baseman Manny Machado has been activated off the paternity leave list on Friday. That is great news after Machado missed a few games earlier in the week due to a personal matter. He's batting fourth and covering third base during Friday's game against the Philadelphia Phillies. In a corresponding move, infielder Matthew Batten has been optioned to the minors. Fantasy managers should make sure to get Machado back in their lineups.

Los Angeles Dodgers manager Dave Roberts said that right-hander Walker Buehler (elbow) will make another minor-league rehab start with Triple-A Oklahoma City next Tuesday. If all goes well, Buehler will then be activated to make his 2024 debut with the Dodgers. The 29-year-old hasn't pitched in a major-league game since 2022, but he got up to 86 pitches in 4 1/4 innings in his latest rehab start on Wednesday at Oklahoma City despite giving up five runs (three earned). His numbers on his rehab start have been nothing to write home about -- a 4.86 ERA, 1.68 WHIP, 16 strikeouts and nine walks in 16 2/3 innings -- but the most important thing is that he's healthy. Buehler could have some ups and downs early on with LA, but if he can show any of his pre-injury form in 2024, he has the potential to be a huge fantasy asset down the stretch.

Cleveland Guardians second baseman Andres Gimenez is not in the club's starting lineup on Friday for the start of a big series in Atlanta against the Braves. With Gimenez starting on the bench, Gabriel Arias will start at the keystone and will hit seventh in the order against Braves left-hander Chris Sale. Gimenez is hitting a modest .258 (24-for-93) on the year with no home runs, 14 RBI and three stolen bases in his first 24 games. The left-handed hitter is surprisingly hitting better against southpaws (.280) in 29 plate appearances than he is against righties (.250), but he'll still get the day off against the lefty Sale. Arias has gone 14-for-50 with a homer, eight RBI and two steals early on but is hitless in his two career at-bats versus Sale.

Washington Nationals third baseman Nick Senzel (illness) remains under the weather on Friday against the Miami Marlins and is not in the starting lineup. Rookie Trey Lipscomb will get the nod at the hot corner and will hit out of the eight-hole against Marlins right-hander Anthony Maldonado, who will be making his major-league debut. Senzel was scratched from Thursday's lineup, so this will be his second straight missed game. Fantasy managers in deeper leagues will want to check back on Saturday to see if Senzel is feeling well enough to play. The 28-year-old opened the year on the injured list and has only five hits (two home runs) in his first 25 at-bats with the Nationals. Lipscomb has gone 11-for-53 (.208) with a homer, four RBI and four steals in his first 16 big-league games this year.

St. Louis Cardinals right-hander Miles Mikolas will look to get straightened out when he takes the ball for a road contest against the New York Mets. The 35-year-old was knocked around for nine hits, including three homers, leading to five earned runs allowed in just 4 1/3 innings in a losing effort against the Brewers his last time out. It was the second consecutive outing and third of five on the season in which the veteran has allowed five earned runs in less than five innings this season. The rough outing raised his ERA to 6.49 through five starts, although his 4.05 xFIP, 4.28 SIERA, and solid 6% BB% suggest positive regression is likely moving forward.

Detroit Tigers catcher Carson Kelly (rib cage) has been scratched from Friday's starting lineup against the visiting Kansas City Royals with left rib-cage soreness. He will be available off the bench, however. In his place, Jake Rogers will start behind the plate and will bat eighth against Royals right-hander Seth Lugo. The fact that Kelly is available off the bench means that his injury probably isn't very serious, so the 29-year-old backstop could have a chance to return for Saturday's contest. The former second-round pick of the St. Louis Cardinals in 2012 is hitting just .205 (9-for-44) on the year with a homer and six RBI for Detroit. Rogers has been even worse, going 6-for-45 (.133) with a homer and two RBI, so DFS gamers should look elsewhere at the catcher position on Friday.

San Diego Padres right-hander Yu Darvish (neck) threw a side session on Wednesday, after which "reports were favorable," according to manager Mike Shildt. "He was on the gas, but didn't have it to the floor... it was a positive first step." Darvish was put on the 15-day injured list on April 17 (retroactive to April 15) and last pitched on April 14 against the Los Angeles Dodgers. The 37-year-old was shut down in September of last year with a stress reaction in his right elbow and has dealt with back and neck issues in the past. It sounds like Darvish is improving, but at 37 years old, his recurring neck issue is something to keep an eye on when he returns. Before hitting the IL, he had a 4.18 ERA and 1.27 WHIP with 22 strikeouts and 10 walks in 23 2/3 frames over his first five starts.