Glasnow pitches six hitless innings

Pirates' top prospect effectively wild in Indianapolis' loss

Glasnow pitches six hitless innings

It may not have been Tyler Glasnow's most efficient start of the season, but the Pirates' No. 1 prospect still proved to be unhittable.

Glasnow fired six no-hit innings on Friday in Triple-A Indianapolis' 4-0 loss against Charlotte. He recorded six strikeouts but also walked a season-high six batters in the outing, throwing 51 of his 97 pitches for strikes.

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.