Brentz is a power armed- lefty who profiles best as a reliever at the major league level, though he’s got some development work to do with his slider and control to get there. He threw an inning of relief in the All-Star Game, striking out two and walking one in the process.

Acquired at the trade deadline to complete a deal with Seattle for right-handed reliever Arquimedes Caminero last year, Brentz has a short arm action and a 3/4’s arm slot. His herky-jerky delivery can be deceptive, but it’s also the cause of some trouble repeating, which is the root of his erratic control as a pro ( 7.1 and 4.8 BB/9 rates in his two prior years and 81 2/3 combined innings). His double-plus fastball was sitting 95-to-97 mph in this look, mostly at 95 mph, and he can work it to both sides of the plate with boring action to righties and effective tailing movement to lefties. He gets hard tilt with his slider at 82-to-85 mph and will benefit from staying on top of the pitch and commanding it with more consistently.

His advancement will be mostly based on his ability to reign in the control numbers – though with the delivery may prevent him from getting to an average grade – but he is trending the right way this year with a 3.1 BB/9 rate over his 26 innings with Bradenton. In this look, the major leaguer that came to mind as a comparison was Mike Dunn (LHRP, Rockies).