Though Matt Wieters said his right biceps feels much better today, he remains out of the Orioles lineup for tonight's game against the Athletics. Endy Chavez is starting in left field and Chris Davis is serving as the designated hitter instead of Jim Thome, who sat in manager Buck Showalter's office early today. For the Orioles: Nick Markakis RF J.J. Hardy SS Chris Davis DH Adam Jones CF Wilson Betemit 3B Endy Chavez LF Mark Reynolds 1B Omar Quintanilla 2B Taylor Teagarden C Tommy Hunter RHP For the Athletics: Coco Crisp CF Jemile Weeks 2B Seth Smith RF Yoenis Cespedes LF Chris Carter DH Brandon Moss 1B Brandon Inge 3B Kurt Suzuki C Eric Sogard SS Bartolo Colon RHP In case you missed Steve Melewski's report on MASNsports.com, second baseman Brian Roberts will begin an injury-rehab assignment tonight at short-season Single-A Aberdeen. The assignment can last up to 20 days. Update: Thome will not start tonight due to neck spasms.