Glasnow, No. 8 on the Top 100, faced the minimum through the first two innings before running into trouble in the third, when he issued a pair of two-out walks en route to throwing 22 pitches. But the right-hander would settle in after that, as he allowed just three hitters to reach base over his final three frames.
After his no-hit performance, Glasnow is now leading the International League with 92 strikeouts and ranks second among all qualified hurlers with a 1.75 ERA. On top of that, he's held opposing hitters to a .187 average while giving up only three home runs in 77 innings.
But Glasnow's control and command have regressed this year in his first extended exposure at the Triple-A level, leading to the 22-year-old right-hander walking 4.9 batters per nine innings -- his worst mark since his 2013 full-season debut. He's struggled to pitch deep into games as a result, completing seven innings just once in his 14 starts this season.
All that said, Glasnow remains just a few improvements away from joining Jameson Taillon in the Pirates' starting rotation.
Mike Rosenbaum is a reporter for MLB.com. Follow him on Twitter at @GoldenSombrero. This story was not subject to the approval of Major League Baseball or its clubs.