Right-hander Brad Keller has elected free agency after going unclaimed on outright waivers, tweets Daryl Van Schouwen of the Chicago Sun-Times. The White Sox had designated him for assignment on Sunday.
Keller signed a minor league pact with Chicago about halfway into Spring Training. He made three starts for their Triple-A team before being called up in late April. He started two of five appearances at the major league level, pitching to a 4.86 ERA through 16 2/3 innings. Three of Keller’s first four outings were solid, but he gave up four homers in as many innings against the Yankees on Saturday. The Sox decided to go in a different direction, eventually recalling rookie right-hander Nick Nastrini to take the rotation spot.
The 28-year-old Keller has pitched in parts of seven major league seasons. All of that time has been spent in the AL Central. The Royals plucked him out of the Arizona farm system as a Rule 5 pick back in 2017. Keller turned out to be one of the better Rule 5 selections in recent history. He posted a 3.08 ERA as a rookie and turned in 28 starts of 4.19 ERA ball during his second season. His results have fallen off following a strong showing in the abbreviated 2020 season.
Keller allowed more than five earned runs per nine in both 2021 and ’22. He was carrying a 4.57 mark with 14 more walks than strikeouts through 45 1/3 innings last year when he was diagnosed with thoracic outlet syndrome. Kansas City let him walk in free agency last winter.
Teams seeking rotation depth could offer Keller a minor league deal. While his recent production hasn’t been great, he’s still adept at keeping the ball on the ground. He racked up grounders at a 56.1% clip during his brief run with the Sox. He has only had one season where opponents got the ball in the air more than half the time they put it in play against him.
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