Opening Day is here – for the Arizona Fall League. Several Mississippians are on the rosters, including one labeled as a “top prospect” and two as “sleeper prospects” by mlb.com. Brent Rooker, the Mississippi State product, is regarded as the best of Minnesota’s AFL group. The first baseman/outfielder, in his second pro season, hit 22 homers and drove in 79 runs in Double-A this past season. He’ll play for Salt River. Left-hander Justin Steele, a former George County High star, is a “sleeper prospect” out of the Chicago Cubs’ system. Coming back from Tommy John surgery, he started just 11 games over three levels, finishing in Double-A. He had a 2.89 ERA. He is on the Mesa club, along with Delta State alum and fellow Cubs farmhand Trent Giambrone. Petal’s Demarcus Evans is the “sleeper” to watch from Texas’ organization. The 6-foot-5, 275-pound right-hander, who’ll pitch for Surprise, had a 1.77 ERA as a reliever in low A-ball this season. He might not be a sleeper for long. Ex-Ole Miss standout Errol Robinson, a shortstop from the Los Angeles Dodgers’ system, is on the Glendale roster. … Atlanta and Milwaukee are among the feeder clubs for Peoria, and there are a handful of Mississippi Braves and Biloxi Shuckers alums on that team, including Cristian Pache, Ray-Patrick Didder, Kyle Muller and Keston Hiura.