Colorado Rockies right-hander Jake Bird (elbow), who was placed on the 15-day injured list on Sunday with right-elbow inflammation, is likely to need a minor-league rehab assignment before returning to Colorado's bullpen. Bird made a whopping 70 appearances out of the Rockies' bullpen in 2023 but has been inefficient so far in 2024 before getting hurt. He allowed four runs while walking six in his three appearances before landing on the injured list and has a 6.10 ERA (6.35 FIP), a 1.74 WHIP, his first career save, 15 walks and 12 strikeouts in 20 2/3 relief innings this year. "We need to figure out what was going on, and we haven't quite got there yet mechanics-wise," manager Bud Black said. Righty Matt Koch finished off last year strong for Colorado and will replace Bird in the bullpen for now. He was 3-1 with a 2.53 ERA in 21 1/3 innings over 18 outings for Triple-A Albuquerque.