Ole Miss alum Ryan Rolison, the first player from Mississippi chosen in the 2018 MLB draft, had an impressive pro debut in rookie ball in Colorado’s system. He started this season at low Class A Asheville and impressed there, too, earning a quick promotion to high-A Lancaster. The left-hander made his California League debut on Tuesday night and was – as you might’ve guessed – impressive. Rolison threw six shutout innings, yielding two hits and no walks with seven strikeouts at Lake Elsinore, which won the game in 10 innings. Rolison, 21, the No. 22 overall pick in 2018 and already rated the Rockies’ No. 5 prospect by MLB Pipeline, posted a 1.86 ERA in 29 innings at the rookie level last season and was even better this year at Asheville, going 2-1, 0.61. He seemed totally unfazed by the new challenge he faced Tuesday. “Really, it just comes down to me challenging with my stuff and just pitching my game, not worrying about the other things, attacking and going right at them,” he told milb.com. P.S. Kudos to Spencer Turnbull, the former Madison Central High standout who notched his first big league win for Detroit on Tuesday. He worked five shutout innings and beat the world champion Boston Red Sox at Fenway Park. As he said in an mlb.com story: “Such a historic place. To get my first win here is pretty cool.” The rookie right-hander is 1-2, 2.77 in five starts this season.