Baxter was optioned to Triple-A Iowa on Sunday, Gordon Wittenmyer of the Chicago Sun-Times reports. Baxter hasn't seen much playing time recently, and will now rejoin to Triple-A upon the return of David Ross (concussion) from the disabled list. However, the Cubs only have three outfielder on the roster as well as three catchers, so it's possible he'll rejoin the club after the All-Star break.