With scheduled off-days coming on Thursday and Monday, the Indians do not require a fifth starter until their May 7 home game against the Royals. Barring an injury at the Major League level, an optioned player must remain in the Minors for a minimum of 10 days. That means Anderson could be recalled for that game against Kansas City, if he is still deemed the best choice for the fifth.
The top rotation alternatives at Triple-A are lefty TJ House and right-hander Mike Clevinger, who is ranked by MLBPipeline.com as the Indians' No. 7 prospect.
Corey Kluber, Danny Salazar, Trevor Bauer and Josh Tomlin occupy the top four spots in the rotation right now.