ESPN's Buster Olney reports that concern over Felix Hernandez's pitching elbow might affect the contract extension he agreed to last week.
Reds transferred RHP Homer Bailey from the 15-day disabled list to the 60-day disabled list.
Henderson Alvarez was removed from his start Monday versus the Mets with a left oblique strain.
Padres purchased the contract of INF Cory Spangenberg from Double-A San Antonio.
Royals activated 1B Eric Hosmer from the 15-day disabled list.
Royals purchased the contract of LHP Brandon Finnegan from Double-A Northwest Arkansas.
According to Matt Gelb of the Philadelphia Inquirer, the Phillies will promote Maikel Franco on Tuesday.
Miguel Cabrera (ankle) is serving as the Tigers' designated hitter on Monday against the Indians.
Justin Masterson has been demoted to the bullpen.
Athletics activated SS Jed Lowrie from the 15-day disabled list.
Evan Drellich of the Houston Chronicle reports that the Astros have fired manager Bo Porter.
Kolten Wong (head) passed additional concussion tests on Monday morning in St. Louis.