The Royals announced they have claimed pitcher Ryan Weiss off waivers from the Arizona Diamondbacks, and have designated pitcher Matt Peacock for assignment. Weiss will be assigned to Triple-A Omaha and taking Peacock’s place on the roster will be pitcher Wyatt Mills, who was recently acquired from Seattle in the Carlos Santana trade.
Weiss is a 25-year-old right-hander who was a fourth-round pick in the 2018 draft out of Wright State University. He had a 4.76 ERA with 15 strikeouts and just one walk in 17 innings for Double-A Amarillo before being promoted to Triple-A Reno where he had a 7.45 ERA with 10 strikeouts and 7 walks in 9 2⁄3 innings. The Diamondbacks designated him for assignment last week to make room for Dallas Keuchel.
Fangraphs ranked Weiss as the #36 prospect in the Arizona organization before the season. They note he has had a velocity spike since becoming a reliever full-time with a fastball that sits at 93-95 mph, adding “only his fastball and slider induced any swings and misses.”
The Royals designated Peacock for assignment after also acquiring him from the Diamondbacks earlier this year in a trade. The 28-year-old appeared in seven games with the Royals and had a 4.91 ERA with four strikeouts and two walks in 7 1⁄3 innings.
Mills joins the roster after just one scoreless inning for Triple-A Omaha. He has appeared in eight games at the big league level for Seattle this year with a 4.15 ERA and six strikeouts and three walks in 8 2⁄3 innings. He throws from a sidearm angle with a fastball, sinker, slider combo, relying on groundballs to get hitters out.