The Boston Red Sox made a slew of moves on Monday, including designating right-handed reliever Brad Keller for assignment.
Now, after clearing waivers, Keller has opted to become a free agent rather than play for Triple-A Worcester.
UPDATE: Keller has reportedly signed a minor league deal with Boston.
Boston originally signed the 29-year-old back in May, and he made 10 appearances for the team before being sent down to Triple-A the first time.
He was recalled last week and pitched four innings out of the bullpen in Saturday's 5-4 loss to the Houston Astros, allowing three runs on six hits and two walks.
In total, he threw 20 2/3 innings for the Red Sox over 10 outings and posted a 5.66 ERA and a 1.500 WHIP while striking out 17 batters.
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