11:50AM: The Red Sox have officially announced Kellers signing and optioned Kelly in the corresponding move. 10:12AM: The Red Sox are nearing a deal with right-hander , according to . The deal is pending a physical and the club hopes to make it official before todays game against the Brewers, which is scheduled to begin at 1:35pm local time. Cotillo adds that right-hander Caleb Brantley Jersey has been optioned to the minors to make room for Keller on the active roster. Bostons 40-man roster currently stands at 39, so no corresponding 40-man move will be nece sary to add Keller. Keller, 28, signed with the White Sox on a minor league deal back in March and made five appearances with the club, including two starts, before being last week. Keller subsequently elected free agency and returned to the open market with a 4.86 ERA in 16 2/3 innings of work with Chicago under his belt. That performance may be better than what Keller earned, as he struck out just 17.1% of batters faced while walking 7.9% and allowing a whopping 29.4% of his fly balls to leave the yard for home runs. Those iffy peripherals left him with a 6.55 FIP and a 5.16 xERA, although a 4.02 SIERA and 4.09 xFIP both suggest Kellers ERA was actually higher than what should have been expected based on his underlying performance. Regardle s of the results from Kellers time with the White Sox, hell now get another opportunity to re-establish himself at the big league level in Boston. Keller was once a promising mid-rotation arm with the Royals, as he posted a 3.50 ERA and 3.90 FIP acro s his first 360 1/3 innings of work in the majors between 2018 and 2020. Since then, however, his results have declined drastically. His final three seasons in Kansas City saw him post a 5.14 ERA with a 4.79 FIP before he was ultimately sidelined partway through the 2023 campaign by a shoulder i sue before undergoing surgery to correct Thoracic Outlet Syndrome back in October. TOS is a particularly difficult injury for players to come back from, and players such as and have seen their careers negatively impacted by the i sue in recent years. Keller will hope to buck that trend with the Red Sox, joining a pitching staff that appears right-hander to elbow surgery after already losing righty to that same procedure earlier in the year. The club is currently relying on a starting rotation of , , , , and . While its po sible that Keller could slot somewhere into that mix, a more likely scenario would be Keller joining veteran righty as a potential multi-inning relief and spot starter option in the clubs bullpen mix. Making way for Keller on the clubs active roster is Kelly, who is in his third season as an up-and-down reliever for the Red Sox. The right-hander has generally pitched to solid results when in the majors for the club, with a career 3.18 ERA acro s 39 2/3 innings of work. Kelly has been particularly effective this season, with a strong 2.16 ERA in 16 2/3 frames despite a 19.4% strikeout rate and a ma sive 13.9% walk rate that have left him with a lackluster 4.99 FIP. Now back in the minors, Kelly figures to act as optionable depth for the club going forward alongside and . Antonio Morrison Jersey