Keller was optioned to Triple-A Indianapolis prior to Tuesday's game against the Cubs.

EDGE Analysis

With Cody Ponce being recalled to start Tuesday's tilt, Keller was deemed the odd man out for the Pirates. The right-hander appeared in three games since being called up May 15, allowing three earned runs on two hits and three walks while punching out four. He figures to be a candidate to rejoin the big club at some point later this season.