Twins sent RHP Shairon Martis outright to Triple-A Rochester.
Chase Headley left Thursday's game against the Nationals in the second inning with a possible knee injury.
Eduardo A. Encina of the Baltimore Sun reports that the Orioles are eyeing next weekend as the return date for Manny Machado (knee).
Athletics manager Bob Melvin said Thursday that Jim Johnson could be back in the ninth inning mix along with Luke Gregerson and Sean Doolittle.
A.J. Griffin will receive a second opinion on his ailing right elbow from Dr. Thomas L. Mehlhoff on Tuesday.
Doug Fister (lat) is scheduled to make his first minor league rehab start Sunday with High-A Potomac.
Ivan Nova will undergo Tommy John surgery next Tuesday.
The Rangers are hopeful that Shin-Soo Choo (ankle) can avoid the disabled list.
Russell Martin expects to return to the Pirates' starting lineup on Friday in St. Louis.
Red Sox activated OF Shane Victorino from the 15-day disabled list.
According to Joel Sherman of the New York Post, Michael Pineda has been suspended 10 games for using pine tar in his start Wednesday against the Red Sox.
Corey Kluber righted the ship in a big way on Thursday, going the distance and striking out 11 in the Indians' 5-1 win over the Royals.