Rodriguez has made three starts this spring, throwing 8 2/3 innings and allowing nine earned runs, six of which came in his first outing of the year. His previous two outings have been better, including Thursday against Washington, in which he allowed four hits and one run and struck out four batters in four innings.
Rodriguez, the Astros' Pitcher of the Year in 2009, overcame a slow start last year and wound up going 11-12 with a 3.60 ERA. He was 8-2 with a National League-leading 2.03 ERA in his final 18 starts of the season, parlaying that into a three-year, $34-million contract extension.
He's battled various nagging injuries in his career, including a strained left groin that put him on the disabled list in 2008. He also battled a strained oblique injury in 2008, but it didn't cause him to go on the disabled list. Rodriguez also had a strained right hamstring in 2009 and dealt with back spasms last year.