The Los Angeles Angels claimed right-hander Nick Robertson off waivers from the St. Louis Cardinals and left-hander Brock Burke off waivers from the Texas Rangers on Tuesday. Robertson allowed six earned runs in 12 1/3 relief innings for St. Louis earlier this year with two walks and 14 strikeouts before getting injured and being sent to Triple-A Memphis. The 26-year-old posted an ugly 7.48 ERA and 1.80 WHIP with one save in 21 relief appearances at Memphis. Burke, 28, had a 9.22 ERA and 2.19 WHIP with 16 K's and nine walks in 13 2/3 relief innings at the major-league level this year before being designated for assignment. Both Robertson and Burke will likely report to Triple-A Salt Lake as they try to work their way back to the big leagues as middle-relief arms.