CHICAGO -- While Avisail Garcia is trying to put the final touches on an All-Star campaign in the big leagues, several members of the White Sox farm system enjoyed All-Star festivities of their own.
With the break in play for the Minor League All-Star break, a series of roster moves saw 25 prospects change affiliates for the second half of the Minor League season. Also, 31 of the 40 White Sox Draft picks are under contract and will soon join the system.
Here are the highlights from this week in White Sox Minor League baseball:
Alec Hansen, Class A Advanced Winston-Salem
Hansen headlined a list of Minor League promotions. The club's No. 10 prospect, according to MLB Pipeline, earned a promotion to Winston-Salem from Class A Kannapolis after going 7-3 with a 2.48 ERA in 13 starts. He was dominant at the end of his run, striking out 50 batters and allowing six runs over his last five starts.
Zack Collins, Class A Advanced Winston-Salem
Collins has been solid both at and behind the dish for the Dash this season. While he is known mostly for his bat, his progression on the defensive end has been encouraging. The White Sox No. 7 prospect and 2016 first-round Draft pick has thrown out 32 baserunners attempting to steal, tops in the Carolina League.
Luis Robert, Dominican Summer League White Sox
Robert, the club's No. 3 prospect, is still working to find his stride in professional baseball but knocked his second multi-hit game in a week on Thursday. Robert is expected to spend this season with the DSL squad, re-acclimating himself after nearly a year off from organized baseball.

Worth noting
• Double-A Birmingham right-hander Michael Kopech, the club's No. 2 prospect and the No. 2 right-hander in all of baseball, had his start in the Southern League All-Star game rained out. He was slated to start for the Northern Division.

• White Sox No. 16 prospect Jameson Fisher made an instant impact upon his callup to Winston-Salem. The outfielder knocked a walk-off RBI single in his very first game with the Dash.
• Triple-A Charlotte second baseman Yoan Moncada, the No. 1 prospect in all of baseball, has shown added patience at the plate and has actually drawn more walks (12) than he has struck out (11) in his last 10 games, including at least one walk in each of his last four games entering play Friday.