Melky Cabrera had a benign tumor removed last Friday from his lower back -- near the spinal cord.
Carlos Gomez (wrist) will be shut down for a week from baseball activities.
Adam LaRoche (back) is out of the Nationals' starting lineup on Tuesday night against the Dodgers.
Diamondbacks activated OF A.J. Pollock from the 15-day disabled list.
Michael Wacha (shoulder) will return to the Cardinals' starting rotation Thursday versus the Brewers.
Desmond Jennings (knee) remains sidelined on Tuesday.
Kolten Wong (neck) is not in the Cardinals' starting lineup on Tuesday night against the Pirates.
An MRI taken Tuesday on Anthony Rizzo's lower back revealed a muscle strain.
Pirates recalled OF Gregory Polanco from Triple-A Indianapolis.
Maikel Franco will make his major league debut Tuesday against the Braves.
J.J. Hardy (back) is not in Tuesday's lineup against the Reds.
Yankees pitching coach Larry Rothschild said that Masahiro Tanaka (elbow) was "fine" after long toss and throwing off flat ground on Tuesday.