The Giants and left-hander Ryan Borucki are in agreement on a one-year, major-league deal. Right-hander Hayden Birdsong has been placed on the 60-day injured list in a corresponding move. Borucki is a client of ISE Baseball.
Borucki, who turns 32 on March 31, joins a new organization just a day after being released by the White Sox. Since debuting with the Blue Jays in 2018, he owns a 4.28 ERA, a 19.7% strikeout rate, and an 8.9% walk rate in 256 1/3 innings. His strikeout and walk numbers are worse than average, though Borucki has shown flashes of success thanks to a strong 48.3% career groundball rate. His most recent above-average season came in 2023 with the Pirates. He posted a 2.45 ERA in 40 1/3 innings that year while walking just 2.6% of hitters and allowing less than one home run per nine innings for the first time since the pandemic season.
He has struggled mightily since then. In 46 innings from 2024-25, Borucki has a 5.28 ERA and a slightly more generous (but still not great) 4.32 FIP. His pinpoint control from 2023 now appears to be an outlier, as Borucki has walked 10.2% of hitters since the start of 2024. His hard-hit rate had reached a career-low 29.7% in 2023, though that returned to a more typical 38.5% in 2025. He missed most of 2024 with left triceps inflammation, then a month and a half of 2025 with lower back inflammation. Indeed, the 2023 season was his most recent injury-free year.
Recent track record aside, Borucki did very well in Spring Training with the White Sox. Leading up to his release yesterday, he had pitched six innings over an equal number of appearances without allowing an earned run. He also struck out eight hitters while allowing just a single walk and no home runs. As usual, spring stats should be taken with a grain of salt, though Borucki’s performance was enough to garner interest from several teams upon his release from Chicago. The Giants, who showed interest in Borucki earlier this offseason, now bring him in on what is undoubtedly a low-cost deal.
With this signing, San Francisco figures to carry three lefties in their season-opening bullpen. Erik Miller and Matt Gage come with less experience than Borucki, though they have intriguing profiles on their own. Miller’s four-seam velocity is in the 89th percentile, while his sinker, slider, and changeup all grade slightly above average by Statcast’s run value metric. He pitched 30 innings with a shiny 1.50 ERA in 2025, albeit with less encouraging peripherals and significant time missed due to a left elbow sprain. Gage does not throw as hard as Miller, but he did well last year with a 3.19 ERA in 31 innings between the Tigers and Giants. Although he doesn’t strike out many hitters, he makes up for it with a groundball rate in the upper 40s.
Assuming he sticks on the roster, Borucki will serve as a veteran complement to those two, as well as a potential trade piece should the Giants be out of contention by the deadline. Per RosterResource, the Giants’ 2026 payroll stands at $203MM, with a projected luxury tax number of $232.89MM. That puts them under the first tier of luxury tax threshold of $244MM, so Borucki won’t cost them anything beyond his modest salary.
Meanwhile, Birdsong’s IL placement was entirely expected after Thursday’s announcement that he is set to undergo Tommy John surgery. The procedure will keep him out for all of 2026 and a good part of 2027 as well. He will earn one year of service time while he is on the IL. Birdsong turns 25 in August and will have over two years of service time upon his return, leaving the Giants with four additional years of club control.
Jon Heyman of the New York Post was first to announce that the Giants and Borucki were close to a deal. Robert Murray of FanSided reported that the two sides were in agreement. Justice de los Santos of Mercury News added Birdsong’s IL placement as the corresponding move.
Photo courtesy of Mark Smith, Imagn Images
