Signed for $125,000 out of the Dominican Republic by the Padres in 2015, Clase didn't reach full-season ball until 2019 -- when he raced from high Class A to the big leagues in four months. Acquired by the Rangers in exchange for Brett Nicholas a year earlier, he posted a 2.31 ERA in 21 games with Texas and permitted just one earned run in his final 12 outings. After coming to the Indians along with Delino DeShields in return for two-time Cy Young Award winner Corey Kluber in December, he strained his lat during Spring Training and drew an 80-game suspension in May after testing positive for a performance-enhancing substance.
Clase's fastball has climbed from the upper 80s when he signed at age 16 to the mid-90s when he joined the Rangers to regularly topping triple digits last season. It now ranges from 97-102 mph, but what makes it unique is crazy cutting and riding action that makes it almost impossible for hitters to barrel. He can overpower hitters with an upper-80s slider with depth at times, though it sometimes flattens out into a slurve.
Clase generates his power arsenal with arm speed rather than effort in his delivery, though the movement on his fastball can make it difficult to harness at times. After averaging 4.2 walks per nine innings in three seasons in San Diego's system, he sliced that rate to 2.0 in two years with Texas. If he can make similar strides with his command, he could be a closer.