Jason Bay (calf) went 0-for-4 with two strikeouts in his return to the Mets' lineup Wednesday.

Bay missed Tuesday's game because of a minor calf bruise. He's batting just .157/.248/.298 this season.

Jason Bay returned to action on Wednesday August 1.

Jason Bay is not in the Mets' lineup Tuesday due to a calf injury.

Bay fouled a ball off the calf during Monday's game. He should be considered day-to-day.

Jason Bay snapped an 0-for-23 skid while going 1-for-3 with two walks and three runs scored on Monday.

Bay's single was his first his since June 21. Obviously, he still has a ways to go.

Jason Bay singled and launched a solo homer off Nationals' closer Tyler Clippard Wednesday.

His bomb drew the Mets to within one run before Jordany Valdespin, who delivered a pinch-hit blast in Bay's place Tuesday, struck out to end it. Bay is hitting just .195 over 24 games in his injury-shortened season, but the Mets are committed to sticking with him.

Mets activated OF Jason Bay from the 15-day disabled list.

Jason Bay (concussion) went 0-for-2 with two walks Monday in his third rehab game with Triple-A Buffalo.

Bay also played entire game in left field, which included on embarrassing moment where he lost a ball in the lights. The veteran outfielder is 3-for-10 with three walks and three strikeouts in three games with the Bisons and hasn't had any setbacks following his concussion last month. The Mets have yet to make an official announcement, but the veteran outfielder is expected to be activated from the disabled list for Tuesday's game against the Nationals.

Updating a previous item, Jason Bay (concussion) is expected to rejoin the Mets on Tuesday.

The Mets likely want Bay available for the series opener against Washington, where he'll start against lefthanders Ross Detwiler and Gio Gonzalez. The Newark Star-Ledger reported that Bay wouldn't be back until Wednesday, but evidently he'll return on Tuesday, as originally expected. The Mets will need to announce a corresponding move prior to his return.

Jason Bay (concussion) is expected to rejoin the Mets Wednesday.

It was originally reported that he would be back Tuesday, but evidently he'll remain on his rehab assignment for an extra day. Bay began his rehab assignment with Triple-A Buffalo Saturday, picking up a single and a walk in five plate appearances.

Jayson Bay (concussion) is expected to move his rehab assignment Saturday to Triple-A Buffalo.

The Mets have yet to confirm anything, but this would obviously indicate he's recovering on schedule. Barring an unforeseen setback, Bay should return for Tuesday's game against the Nationals.

Mets manager Terry Collins plans to speak with Jason Bay (concussion) in the next two days to get an assessment on his progress.

Collins confirmed there isn't a "set number of at-bats" Bay needs before returning, and the New York Post suggests he could rejoin the Mets in Washington next week. Bay went 0-for-3 with a walk and a strikeout in his latest rehab appearance, not that it matters. Jordany Valdespin will likely be demoted once Bay returns.

Jason Bay (concussion) went 0-for-3 with a walk Thursday in his first rehab game with High-A St. Lucie.

He also played seven innings in left field. He'll likely need to get through a few more rehab games, but should be back in the Mets' lineup before long. The 33-year-old outfielder has been sidelined since June 15 with a concussion.

Jason Bay (concussion) is expected to begin his minor league rehab assignment Wednesday at High-A St. Lucie.

He will also play for Triple-A Buffalo before his activation from the disabled list. Bay is working his way back from his second concussion in three years. Barring any recurrence of symptoms, he'll regain his starting spot in left field with the Mets shortly after the All-Star break.

Jason Bay (concussion) is expected to begin his minor league rehab assignment Sunday at High-A St. Lucie.

Bay is working his way back from his second concussion in three years. Barring any recurrence of symptoms, he'll regain his starting spot in left field with the Mets shortly after the All-Star break.

Jason Bay (concussion) expects to return just after the All-Star break.

"Optimistically, it would be right after the All-Star break if everything goes swimmingly," Bay said. "But we haven't gotten this far down the road yet as to know exactly what that might entail." Bay has been symptom-free for nearly two weeks, but he's yet to really ramp up his activity. If he can do that while still feeling 100 percent, he should indeed be cleared to return soon.

Jason Bay (concussion) has been cleared to begin running this weekend.

Bay has been riding a stationary bicycle since earlier in the week, and has yet to experience a recurrence of his concussion-related symptoms. While this is a step in the right direction, it's still extremely unlikely that he'll return to the Mets until after the All-Star break.

Jason Bay (concussion) rode a stationary bicycle Wednesday for 20 minutes.

It was Bay's first physical activity since suffering a concussion on June 15. Mets manager Terry Collins said Bay felt fine and did not experience a recurrence of concussion symptoms. While that's good news, we'll know a lot more on his status once he starts running and doing baseball activities. It's unlikely he'll be back before the All-Star break.

Jason Bay is ''symptom-free'' eight days after his concussion and could be cleared soon for workouts.

Bay still hasn't received medical clearance, but this is obviously a step in the right direction. He was at Citi Field on Friday for some follow-up tests, and is said to be progressing well. There should be more clarity on his status later this weekend.

Jason Bay (concussion) was at Citi Field on Friday for some follow-up tests.

Bay was placed on the 7-day disabled list last weekend after slamming his head and neck into the left field wall while attempting to make a diving catch. It was his second concussion in the space of two years, but he is said to be progressing well and the Mets are hopeful he'll return this season.

Jason Bay (concussion) remains without a timetable.

The Mets still don't know the severity of Bay's injury, but he "may be out quite a while" according to general manager Sandy Alderson. Bay was examined by a specialist Monday and will be evaluated again today. There should be more clarity after he goes undergoes further testing.