Miami Marlins left-handed pitching prospect Robby Snelling made his highly anticipated major league debut last week. And now, just before he was scheduled to make his second big league start, the team has provided an ominous injury update on the young southpaw. Snelling, Miami's No. 2 prospect for 2026 on MLB Pipeline , has been placed on the 15-day injured list with a left elbow UCL sprain, the Marlins announced on Wednesday. While the team didn't share any additional details on the next steps for the 22-year-old, it's always extremely concerning to hear about a pitcher dealing with an elbow injury . So far in 2026, Snelling put up stellar numbers in the minors, posting a 1.86 ERA in six Triple-A starts with 44 strikeouts in 29 innings. That earned him a promotion to the majors, where he gave up three runs on five hits and four walks over five innings in his MLB debut against the Washington Nationals on May 8.…