San Francisco Giants: Top prospect update after one month

Single-A Augusta (13-11)
Top Prospects
6. SP Sean Hjelle—6 GS, 3.04 ERA, 1.16 WHIP, 28 K, 26.2 IP
7. SP Jake Wong—5 GS, 2.78 ERA, 1.01 WHIP, 22 K, 22.2 IP
8. SP Gregory Santos—2 GS, 5.40 ERA, 1.65 WHIP, 6 K, 6.2 IP—INJURED
18. SP Blake Rivera—4 GS, 4.60 ERA, 1.21 WHIP, 19 K, 15.2 IP
19. 3B Jacob Gonzalez—23 G, .222/.370/.375, 8 XBH (1 HR), 11 RBI, 7 R
25. SP Seth Corry—5 GS, 1.83 ERA, 1.32 WHIP, 33 K, 19.2 IP
Overview
How about that Single-A starting rotation?
The Giants took Sean Hjelle (second round), Jake Wong (third round) and Blake Rivera (fourth round) early in last year’s draft, and all three have looked sharp in the early going this season. Despite his higher ERA, Rivera leads the group with a .179 BAA.
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Meanwhile, left-hander Seth Corry was a third-round pick in 2017 who was signed to an above-slot bonus of $1 million. While the 1.83 ERA and 33 strikeouts in 19.2 innings speak to his swing-and-miss stuff, he’s also walked 15 batters and has a long way to go with his 40-grade command.
Offensively, infielder Shane Matheny is benefiting from a return trip to Single-A, hitting .256/.337/.476 with six doubles, four home runs and 19 RBI.
Jacob Gonzalez is hitting just .222 with one home run, but he’s showing a vastly improved approach, raising his walk rate from 6.1 to 16.3 percent while recording more walks (15) than strikeouts (12).
If there’s going to be a breakout prospect in 2019, he may very well come from this group.
The rest of the team’s top prospects have yet to begin their 2019 campaigns, as Low-A Salem-Keizer and the rookie ball affiliates have yet to kick off their seasons.
Remembering the 1989 NL pennant winners. Next
The Giants may not have a top-tier farm system, but there is plenty of intriguing talent down on the farm as they build toward the future.