Rumblings suggest Jenrry Mejia may make Johan Santana's next start, with the Mets sticking to a six-man rotation.

Mejia last pitched Friday, so proper rest would not be an issue. Santana was due to undergo an MRI on his ailing back Tuesday.

Since returning to a starting role with Triple-A Buffalo on July 30, Mejia has limited opponents to four runs (two earned) on 18 hits and six walks while striking out eight in 18 1/3 innings.

Mejia last appeared in the majors in 2010, when he made three September starts after working earlier in that season as a reliever. He underwent Tommy John surgery on May 16, 2011.