Boston Red Soxrookie infielderMarcelo Mayerwill undergo wrist surgery that will end his 2025 season,manager Alex Cora announcedon Sunday. Mayer, 22, will be sidelined for three months following the surgery and is expected to be ready for spring training, according to Cora. [Join or create a Yahoo Fantasy Football league for the 2025 NFL season] The rookie had been on the injured list since July 25 witha sprained right wrist. He sustained the injury while swinging and missing at a slider ina July 23 gameversus thePhiladelphia Philliesand pitcherJesús Luzardo. Mayer receivedan anti-inflammation injectionfor the injury on Aug. 2, hoping that would lead to a sooner return. However, the treatment didn't work as quickly as the Red Sox hoped and Mayer wasn't able to resume baseball activities. He previously injured the same area of his wrist in 2022,according to MLB.com. His rookie season ends with a .228/.272/.402 slash average with eight doubles, four home runs and 10 RBI. Mayer should narrowly maintain his rookie status for 2026, registering fewer than the 130 at-bats or 45 days on the active roster (excluding time on the IL) thatMLB rules require. He had 127 at-bats for the season, spending 44 days on the Red Sox's roster before going on the IL. Mayerwas called up on May 25after Alex Bregman went on the IL with a right quad strain. The Red Sox's 2021 first-round pick (No. 4 overall), he is a natural shortstop. However, he mostly played third base and some second base in Boston, making a couple of appearances at his regular position in the 44 games he played. At 68-56 going into Sunday's MLB schedule, the Red Sox holdsecond place in the AL East, five games behind theToronto Blue Jaysand 1.5 games ahead of theNew York Yankees. Boston and theSeattle Marinerscurrently hold the top two AL wild-card playoff spots, with the Yankees holding the third.