The Guardians have signed right-hander Luis Frias to a minor league deal with an invite to big league Spring Training, per a club announcement.
Frias, 27 in May, signed with the Diamondbacks out of the Dominican Republic as an amateur and made his pro debut back in 2016. After slowly making his way through the lower levels of the minors in his early years with the club, Frias quickly rose from High-A all the way to Triple-A during the 2021 season. While he struggled to a 4.93 ERA in 23 starts across three levels of the minors that year, that didn’t stop Arizona from giving Frias his first big league opportunity down the stretch. He pitched fairly well in that brief cup of coffee, with a 2.70 ERA and three strikeouts in 3 1/3 innings of work, though his five walks represented a clear red flag regarding how his command would play at the big league level.
Those control issues manifested in the form of a brutal 2022 season. Frias’s sophomore campaign in the desert scarcely could have gone worse, as he posted a 10.59 ERA in 17 big league innings of work while once again walking (17) more batters than he struck out (14). His 3.99 ERA at Triple-A offered some level of optimism, though even that was held back by a 12.3% walk rate at the level. Despite his struggles, Frias’s tantalizing stuff was enough to convince Arizona to keep him in the fold for 2023, and he delivered the best season of his career in return. Though he walked 12.2% of opponents in the majors that year, Frias posted a 4.07 ERA that was 9% better than average by measure of ERA+ in 31 innings of work. His 18.7% strikeout rate was lackluster, but in terms of pure run prevention his results were those of a perfectly adequate middle reliever.
Unfortunately, Frias’s performance went back off the rails in 2024. In 13 MLB appearances split between the Diamondbacks and Blue Jays, the right-hander struggled to a 13.97 ERA and 5.55 FIP while recording just 9 2/3 total innings of work. Things even looked dire at the Triple-A level during his time in Arizona, as he posted a lackluster 4.88 ERA for the club’s affiliate in Reno. Fortunately for Frias, however, he dominated at Triple-A late in the year after being plucked off waivers from the Snakes. He posted a 0.96 ERA and a 27.9% strikeout rate for his new club’s Buffalo affiliate, and while that wasn’t enough to convince the Jays to keep him on their 40-man roster this winter it was evidently enough to earn Frias a look from the Guardians this winter.
While Frias isn’t likely to break camp as part of a crowded Cleveland bullpen, he’ll now have the opportunity to work with one of the league’s best pitching development organizations in hopes of further harnessing his potential and sorting out his command going forward. In the meantime, he’ll serve as a non-roster depth option for the Guardians out of the bullpen who could be called upon in the event of an injury.