He is the top pitching prospect in the New York Yankees’ system, and on Sunday, in his big league spring debut, Will Warren gave Yankees brass and fans a sneak preview of what he might soon bring to The Show. The former Jackson Prep standout from Brandon threw two scoreless innings against Atlanta in a 7-0 victory at Steinbrenner Field in Tampa, Fla. The Braves didn’t trot out their A-team on Sunday, but that really shouldn’t diminish Warren’s performance. The 23-year-old right-hander — the Yankees’ No. 8 prospect overall — yielded the only hit the Braves got but faced the minimum six batters, throwing 20 of 34 pitches for strikes. Drafted out of Southeastern Louisiana in 2021, Warren made his pro debut last summer and reached Double-A, winning seven games for Eastern League champ Somerset. Overall, he was 9-9 with a 3.91 ERA in 26 starts. Unveiling what has been called a “unicorn slider,” he posted 125 strikeouts and 42 walks in 129 innings. “My goals for next year are to keep having success,” Warren told nj.com last month. He isn’t on the 40-man roster, will work mainly in minor league games this spring and likely will begin 2023 back at Somerset. Sunday’s outing was a great kick-start to his year. … A bundle of Mississippians played in the opening weekend of spring training games. Notable performances from Sunday: Hunter Renfroe homered for the Los Angeles Angels; Dakota Hudson threw two scoreless innings for St. Louis; Corey Dickerson went 2-for-2 for Washington; Jordan Westburg had a hit and RBI for Baltimore; and Brent Rooker was 1-for-3 for Oakland.