Pirates' Kyle Keller: Returns to Triple-A

Keller was optioned to Triple-A Indianapolis on Sunday.

Keller has been in the majors since early July -- not counting a one-day stint at Triple-A -- but will now head back to the minors. The 28-year-old has a 6.75 ERA, 1.53 WHIP and 29:20 K:BB across 29.1 big-league innings this season.