2023 was derailed by injuries, including shoulder soreness that delayed his debut by a couple of weeks and a bicep strain that knocked him out from early May through late July. In the 44 innings he managed, mostly at AA, he was as comically dominant as ever, posting a 44% strikeout rate and a 1.68 FIP. He got 18 more innings of work in the Arizona Fall League.
Tiedemann has the prototype power pitcher’s frame at 6’4” and a broad shouldered 220lbs. He throws from the far first base side of the rubber with a slingy delivery and low, wide arm slot that makes the ball feel like it’s coming straight at righties and from behind lefties’ ears. That release point complements the big horizontal movement on all three of his pitches. The fastball sits 94-96 and touches 98 without much vertical rise but with huge arm side run. His best secondary has been a changeup with depth and run, although it backed up a bit in 2023. His slider is a big sweeper, again with huge horizontal break (so much that hitters are sometimes able to lay off it because it looks like a ball inside before breaking all the way across the zone and being called a ball outside), which he has great feel to land in the zone for strikes. It’s three pitches that can all be plus, although he hasn’t regularly had all three sharp at the same time yet. Tiedemann’s command never quite locked in in 2023 with all the disruptions, but in spite of a somewhat unorthodox delivery it could wind up being average or a little above with time.
