Sounds like he has some potential. The strikeout numbers are impressive.
Keep an eye on Mattson, the most big league ready prospect acquired in the four-player package for Dylan Bundy in December. A 24-year-old former 19th-round pick, Mattson rose quickly through the Angels’ system on the heels of gaudy strikeout numbers, using swing-and-miss stuff that translated at every level. He stockpiled 110 whiffs in 73 1/3 innings in 2019, including 19 in a 9 1/2-inning sample at Triple-A Salt Lake. He will probably begin the year at Triple-A Norfolk with a chance to be in Baltimore before long.