Sheets (3-0) allowed only a pair of singles, looking very comfortable in a hitter-friendly ballpark where he has never lost. At age 29, the hard-throwing right-hander is having one of the best Aprils of his career, allowing only three earned runs in four games.
That good start has hit a snag.
Sheets felt tightness in his right biceps and left for a pinch-hitter in the sixth inning with the Brewers ahead 5-0.
In the last two years, Sheets has been limited by a strained groin, a torn finger tendon, shoulder tendinitis and a sore chest muscle.
Sheets was coming off a 5-3 win over the Mets and Johan Santana on Sunday, when he retired 18 batters in a row over one stretch.
Milwaukee’s Bill Hall hit a two-run homer off Bronson Arroyo (0-2), who gave up five runs in
52/3 innings.

