The Red Sox and Brad Keller have evidently reunited on another minor league deal, as he started for Triple-A Worcester yesterday. He had elected free agency last week after being designated for assignment but seems to have signed a fresh pact. If the deal was formalized prior to September 1, he will be postseason eligible with the Sox.
Keller, 29, has been on and off the Boston roster for the past few months. He actually started the season with the White Sox on a minor league deal. He was added to that club’s roster in late April but lasted about three weeks before being designated for assignment, clearing waivers and electing free agency.
He then signed with the Sox and was on their 40-man roster for a few months but elected free agency in mid-August when they attempted to option him to the minors. As a veteran with more than five years of service time, he can’t be optioned without his consent. He went to the open market but quickly re-signed on a new minor league deal. He was added back to the roster last week but designated for assignment one day later, which led to another trip to free agency and this new minor league deal.
Around all of those transactions, Keller has managed to throw 41 1/3 innings over 16 appearances on the year, allowing 5.44 earned runs per nine. His 16.7% strikeout rate is below average but he has limited walks to a 7.8% clip while getting grounders on 50% of balls in play. He’s also logged 51 Triple-A innings on the year with a 4.06 ERA and similar peripherals.
Keller was once a strong rotation member with the Royals but his recent years have been fairly similar to his 2024 campaign. By the end of 2020, he had a 3.50 ERA in 360 1/3 innings but he has a 5.18 ERA in 360 frames from 2021 to the present.
The Red Sox recently lost James Paxton to the injured list for the rest of the year, putting him on the list of guys who won’t return to the club this season, next to Lucas Giolito, Garrett Whitlock and others. They currently have a rotation of Tanner Houck, Nick Pivetta, Brayan Bello, Kutter Crawford and Cooper Criswell. There are some workload concerns in there, as Houck, Crawford and Criswell have already set personal highs in terms of innings pitched in a season. Quinn Priester is another option on the 40-man roster but he has an 8.10 ERA in five Triple-A starts since being acquired from the Pirates.
If they need a spot start at some point this month or someone in that group needs to go on the injured list, Keller should be good to go since he pitched five innings yesterday. The Sox also have Josh Winckowski and Rich Hill on the roster but Hill hasn’t gone more than an inning and a third with the club so far. Winckowski has had plenty of multi-inning outings but hasn’t gotten into a game since August 23, so it might be hard for him to suddenly throw five or six innings on demand.