Mella throws a plus fastball that regularly sits around at 92-95 MPH and can touch as high as 97 that often overpowers hitters. It got extreme downhill plane so it will still be effective even when thrown high in the zone and it also got the really good sink and arm side run when thrown down in the zone and really tough to hit home runs from the hitter's point of view. He can run it inside the strike zone towards a lefty like Greg Maddux as well. His curveball is a power curveball, registering at around 79 MPH. It is overall an above-average pitch that shows glimpses of being a plus pitch with really sharp 11-5 break but there's some curves that lack the sharp break and will get slurvy. His changeup is a circle-change grip that shows potential of being an above-average pitch with the same arm speed as his fastball and it got really good sink as well like his fastball. His delivery makes his pitches tough to pick up and an addition of another pitch, possibly a cutter, will give him 2 pitches that goes in and out of hitters. He repeats his delivery well that's generally difficult to repeat and he got plus pitchability. I still have concerns about his inverted W but Petit has been healthy so far and so does Mella though he got some shoulder injuries before. But his UCL is still intact and maybe genetics is in play right now. Barring any injury, he'll move up to the minors pretty fast and he got a really good chance to be a mid-rotation starter for the Giants.
He got 2 main pitches. A really good fastball that registers low to mid-90s with some movement to it that overmatches hitters and a plus slider in the low-80s with a late and really sharp break that he can throw to righties and lefties though he's not been effective against righties this season. His walk numbers has been worse this season, a testament to how good the hitters are in the PCL though he needs to command his pitches better. He needs to harness a good changeup to give righties another look but his numbers against lefties are great this season, a testament to how nasty his fastball-slider combo plus his low arm slot can be.
I don't really know much about his stuff or his repertoire but based on videos from Longenhagen, I saw that he throws his fastball at low-90s with some arm-side run to it. Once he truly fills out his frame, this pitch can be a plus pitch in the future, sitting in the mid-90s while retaining the movement. His slider sits in the low-80s is above-average with short but sharp movement with potential to improve with proper coaching and a slow curve in the low-70s that I saw on FG video that lacks true sharp movement and a looper so far. His change is still a work in progress but I will project it as an average pitch. He is still very young and the scouts love his makeup, focus and feel for pitching. His delivery needs some ironing, his frame needs to be filled up, his command needs to improve, and his stuff needs to be more better but all of the arrows are pointing up for him and once he returns from his injury, he got a really good chance to reach his full potential with the Giants.
Something Extra: I covered Tyler Beede's start is a subpar one. He throws first pitch balls to a lot of hitters that he faced. He got into 3-0 and 2-1 counts a lot in his outing. He threw 3 to 4 pitches that were way up and in on the righty hitter's point of view. More flyouts than groundouts, that's not his M.O. this season. Left a lot of pitches high in the zone. But retired 8 straight guys. Pure talent making that one work. My conclusion to his outing his that he lacked the feel for his sinker tonight. He needs more seasoning on the command because his walks are higher than in A+. Possibly a tighter strike zone in AA. His hitting though. He got good swing mechanics, good hands, possible MadBum candidate.