Austin Riley, the first Mississippian picked in this year’s MLB draft, made his pro debut today for the Gulf Coast League Braves. The former DeSoto Central High star, a supplemental first-round pick by Atlanta, was the DH and batted fourth for the rookie-level club, which rallied to beat the GCL Yankees 8-7 in 10 innings in Florida. Riley struck out in his first two at-bats, was hit by a pitch (and later scored) in his third and grounded out in his fourth. The play-by-play on milb.com indicates that Riley pinch hit for himself (?) in the eighth inning and walked, then struck out again in the 10th. So, he was either 0-for-3 or 0-for-4. … Also debuting today in the GCL: Mississippi Valley State alum Kalik May, who went 2-for-2 with a walk, a run and a steal for the GCL Blue Jays, whose game was suspended by rain in the seventh inning.