Blue Jays pitching prospect will undergo Tommy John surgery on Tuesday, manager John Schneider told reporters (including ). It is a traditional TJ procedure rather than the increasingly popular brace procedure, and as a result Tiedemann will probably mi s the entire 2025 season. Tiedemann left a Triple-A outing on July 10 due to tightne s in his left forearm, and had reportedly received multiple opinions about how to proceed with the injury. Such a situation usually hints that surgery is being considered, and unfortunately for Tiedemann, hell now face the toughest setback yet of a pro career that has already been marked by injuries. A Richie Hebner Jersey third-round pick for Toronto in the 2021 draft, Tiedemann quickly got himself on the top-100 prospect radar with an impre sive 2022 season that saw him go from A-ball to high-A to Double-A over the course of the year (totaling 78 2/3 innings). He was limited to only 44 frames in 2023, however, due to biceps and shoulder injuries, though Tiedemann did make his Triple-A debut with a single start for Buffalo. Calf and hamstring sorene s slowed his work in Spring Training, and a bout of ulnar nerve inflammation sidelined him on Buffalos injured list earlier this season, which now looks like a precursor to his Tommy John surgery. Tiedemann has thrown 17 1/3 innings spread over three minor league levels in 2024, with a 5.19 ERA and an unpalatable 19.28% walk rate. All told, Tiedemann has thrown only 140 minor league innings over three profe sional seasons, plus 18 more frames in the 2023 Arizona Fall League. Hell only nominally add to that total during whatever minor league rehab work comes in 2025, and a Major League debut that at one point seemed likely in 2023 has now almost surely been pushed back to 2026. Tiedemann doesnt turn 22 until next month so youth is on his side, and he can certainly still be viewed as a key piece of the Blue Jays future. But obviously, it is anyones gue s as to how the southpaw will bounce back after e sentially two lost seasons of development, not to mention how his elbow may or may not hold up in the aftermath of a TJ procedure. Though Tiedemann has yet to reach the big leagues, there are some comparisons here to another highly-touted Jays pitching prospect in , who has been used exclusively as a reliever in the last two seasons due to health concerns. (Ironically, Pearsons Jays tenure ended today when to the Cubs.) Losing Tiedemann to major UCL surgery only adds to the Blue Jays all-around disappointment of a 2024 season. Expecting to contend and reach the playoffs for the fourth time in five seasons, Toronto has instead sputtered to a 47-56 record, and only five teams have a worse winning percentage than the Jays .456 mark. The trades of Pearson and have signaled that a retool is coming at the trade deadline, and while the team reportedly still plans to reload for another shot at contention in 2025, plenty of questions have to be asked about whether , or if Schneider or GM Ro s Atkins are the people best fit to get Toronto back to winning baseball. The lack of minor league support is one strike against the Jays reload plans, as the club hasnt been able to generate much in the way of in-house talent. Tiedemann and Orelvis Martinez are the only two Blue Jays players in MLB Pipelines current top 100 prospects list, and Tiedemann is now slated for TJ surgery while Martinez is serving . Marco Gonzales Jersey