Baseball America Prospect Report — April 27, 2018

Thursday's Stars

• Isan Diaz, 2B, Marlins. Diaz saw his numbers plunge last year, but that can be explained in part by a hamate injury. The Marlins weren't scared by that and he was a key part of the offseason Christian Yelich trade. Diaz is healthy and is making a solid first impression. He was 4-for-5 with two doubles and a home run.

• Ronald Acuña, OF, Braves. Acuña has had quite the first two days in the big leagues. In his debut, he scored the winning run. In his second game he hit his first home run, added a single and his RBI double drove in the winning run in the eighth.

• Cristian Pache, OF, Braves. Pache has a pretty solid case to claim he's the best defensive center fielder in the minors. Yesterday he went 3-for-4 with his first pro home run.

• Sam McWilliams, RHP, D-backs. McWilliams, a big (6-foot-7) righthander who the Diamondbacks picked up in the Jeremy Hellickson trade, has had no problems handling the tough conditions of the high Class A Visalia. McWilliams struck out 12 while walking one in five scoreless innings against Lancaster yesterday. He's made significant strides in the last two years as he's improved his fastball command and his changeup.

• Brady Singer and Casey Mize matchup in a battle of aces and top 2018 draft prospects. Ted Cahill was there and explains how both pitchers lived up to expectations.

Deep American League Rookie Class Could Be Historic

The top five prospects in baseball this year are American League position players. They form the core of a 2022 rookie class that could be historically strong.