Alex Gordon underwent concussion tests Thursday.
Twins activated OF Oswaldo Arcia from the 15-day disabled list; optioned him to Triple-A Rochester.
Trevor Rosenthal earned his 17th save of the season Wednesday in the Cardinals' 7-4 defeat of Milwaukee.
Eduardo Rodriguez was terrific again Wednesday, striking out seven across seven innings of one-run ball in a 6-3 win over the Twins.
Cubs placed OF Jorge Soler on the 15-day disabled list with a left ankle sprain.
Prince Fielder is out of the Rangers' lineup Wednesday.
Josh Hamilton (hamstring) is out of the Rangers' starting lineup again on Wednesday night.
Edwin Encarnacion (hamstring) is out of the Blue Jays' starting lineup again on Wednesday night.
Denard Span (knee) is back in the Nationals' lineup Wednesday.
Salvador Perez (head) is not in the Royals' lineup Wednesday.
Hunter Pence is not in Wednesday's lineup due to a minor left wrist injury.
Yankees designated RHP David Carpenter for assignment.