Red Sox's Brad Keller: Optioned to Triple-A

The Red Sox optioned Keller to Triple-A Worcester on Monday, Chris Henrique of Beyond the Monster reports.

Keller has allowed 10 runs over 16.2 innings as a low-leverage reliever for the Red Sox. He's being replaced by a fresh arm after he threw 31 pitches and allowed three runs over one inning in Sunday's 7-4 win over the Reds.