7/23/12 Mattson is a great kid and a hard worker who has made some jumps this past year. Earlier this season he was only 79-81 mph but on this day his velo jumped to sit comfortably at 83-84. He does throw across his body which gives him some deception and there is some effort in his delivery. His breaking ball is more of a sweeper at this point and sat at 65-66 mph. His change did have some arm side run and was 70-72 mph creating a third arrival time.
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