Harrison made the start in Double-A Richmond's first playoff game Tuesday and lasted just three innings, striking out nine while allowing two runs on four hits and a walk.

EDGE Analysis

All things equal, it wasn't a terrible outing, considering that Harrison recorded every one of his outs via strikeout, but he did give up a trio of doubles while needing 71 pitches to navigate three frames. Harrison closed out the regular season for Richmond with a 3.11 ERA, 1.18 WHIP and 127:39 K:BB across 84 innings after averaging more than two strikeouts per inning alongside a 1.55 ERA in a 29-frame stint in High-A. Regardless of the returns in these playoffs, he's earned his place as one of the top pitching prospects in baseball.

Harrison has pitched 12 scoreless innings over his last three starts with Double-A Richmond, allowing just five hits in that span while posting a 17:7 K:BB.

EDGE Analysis

Harrison went six frames in the first of those three outings, but he was limited to three in the latter two -- presumably a function of the organization managing his innings. His walk rate has been noticeably elevated since he moved up to Double-A, but even so, Harrison's numbers since being promoted -- a 2.79 ERA, 1.12 WHIP and 74 strikeouts in 48.1 frames -- are nothing short of spectacular for a 20-year-old at that level. Harrison has been incredibly hard to hit, having given up three or fewer base knocks in eight consecutive starts now.

Harrison has allowed just one earned run over 11 innings spanning his last two starts for Double-A Richmond, posting a 17:7 K:BB in the process. All told, he has a 4.44 ERA, 1.41 WHIP and 39:15 K:BB in five starts since being promoted.

EDGE Analysis

Walks have obviously been an issue for the 20-year-old hurler since his promotion; he was significantly sharper with his command in High-A, but the higher level of competition in Double-A has clearly required an adjustment. Nonetheless, Harrison's certainly brought his bat-missing ability with him. He'll need to improve his strike-throwing to continue progressing toward San Francisco, but Harrison has a starter's profile and the benefit of pitching for an organization with an excellent track record of developing arms.

Harrison was promoted to Double-A Richmond on Tuesday, Melissa Lockard of The Athletic reports.

EDGE Analysis

Harrison has pitched extremely well this season with High-A Eugene, compiling a 1.55 ERA and 1.00 WHIP with an eye-popping 59 strikeouts over 29 innings in seven starts. The 20-year-old will now get the chance to face a higher level of competition with Double-A Richmond.

Harrison has put up a 21:3 K:BB alongside a 3.27 ERA and 1.00 WHIP across 11 innings spanning three starts so far this season for High-A Eugene.

EDGE Analysis

Last year, Harrison piled up both the strikeouts (14.3 K/9) but also the walks (4.7 BB/9) across 98.2 innings in Low-A, but the 20-year-old is showing far better control in the early going this season (though he did regress in his most recent outing). Harrison's already well regarded for his big fastball and sweeping slider, which likely give him a solid floor as a high-leverage reliever even if he doesn't ultimately make it as a starter. For now, though, he is on track to be a starter, and his stuff combined with the Giants' track record of developing pitchers certainly gives him the potential to become a good one. He's most likely still two or three years away from a potential MLB debut, though.