Shuckers left-handed ace Josh Hader was promoted to Triple-A Colorado Springs on Saturday.
He will be replaced by right-hander Adrian Houser in the rotation after he was activated from the disabled list Saturday. The Milwaukee Brewers also signed Gabriel Noriega to a minor league contact and he will take over at shortstop.
In addition to Saturday's moves, Biloxi outfielder Gabriel Noriega was transferred to Class-A Brevard County, Fla.
Hader, 22, led the Southern League and is currently third in the minor leagues with a 0.95 ERA and a WHIP of 1.00 in 11 starts. He is tied for the league lead with 73 strikeouts and ranks tied for fifth in all of the minors.
The southpaw has not allowed more than one earned run in any of his starts, and the Shuckers have gone 9-2 when the Millersville, Md. native takes the mound, including victories in his first five starts of the season. The 2012 draft pick has held left-handers to a .073 average (3-for-41).
Hader was named the Milwaukee Brewers' Pitcher of the Month for May, compiling a 1-1 record with a 0.96 ERA in 28 innings to go along with 33 strikeouts and eight walks, while holding opponents to a .189 average and posting a WHIP of 0.93.
Noriega batted .211 with five RBI in 31 games with the Mobile BayBears this season.