Padres general manager Josh Byrnes said Tuesday that Cory Luebke (elbow) has "thrown off a mound a couple of times" recently.
After hitting a double in Wednesday's game against the Cardinals, Jay Bruce exited with an apparent injury.
Nelson Cruz left Wednesday's game against the Yankees due to back spasms.
Masahiro Tanaka delivered seven shutout innings Wednesday in the Yankees' 5-0 blanking of the Mariners.
Kendall Graveman fired 6 2/3 innings of one-run ball Wednesday in the Athletics' 5-1 win over the Indians.
Byung Ho Park will undergo season-ending surgery on his right wrist.
Mets manager Terry Collins said that Jon Niese will undergo surgery on his left knee.
Ryan Braun slugged a pair of home runs Wednesday in the Brewers' 7-1 rout of the Rockies.
Carlos Gomez is set to join the Rangers on Thursday.
Alex Bregman hit another double Wednesday in the Astros' 5-4 defeat of the Pirates.
Devon Travis (finger) remains out of the Blue Jays' starting lineup on Wednesday night.
Hanley Ramirez is getting a day off Wednesday.