The Giants are giving Jacob Bresnahan one more challenge before the season ends.
On Thursday, the club bumped the 21-year-old left-hander from High-A to Double-A, a move that comes after a strong run in Eugene and signals just how much the organization likes where his game is headed.
Bresnahan has spent the year climbing the ladder and making his case as one of the better pitching prospects in the system. He arrived in the organization in the 2024 trade that sent Alex Cobb to the Cleveland Guardians, with Nate Furman also coming back in the deal. Since then, Bresnahan has worked his way into the thick of the Giants’ prospect conversation.
That conversation has only gotten more interesting with the additions of several pitching prospects, including Jackson Flora in the draft and Ramon Marquez in a trade with the Philadelphia Phillies. Flora is viewed as the top arm in the system, but after that, there’s plenty of debate.
Bresnahan gave the Giants plenty to think about in 2025. He was named California League Pitcher of the Year and put together a 2.92 ERA with 118 strikeouts and 38 walks in 98.2 innings for Eugene. He finished even stronger, posting a 2.28 ERA in 51.1 innings since July 1.
His arsenal has played up as the season has gone along. Bresnahan works from a three-quarters arm slot and gets above-average extension, which helps the ball get on hitters quickly.
He’ll show a low-to-mid 90’s fastball that rides up in the zone, along with a mid 80’s changeup and a low 80’s sweeping slider. The changeup is his go-to secondary pitch.
The promotion also sets him up to become one of the youngest pitchers to appear in a game in the Eastern League in 2026.
Elsewhere in the system, Charlie Szykowny also earned a bump, moving from Double-A to Triple-A. The left-handed hitter was a ninth-round pick in the 2023 draft out of the University of Illinois at Chicago, and the Giants selected his college teammate, Zane Zielinski, in the same round one year later. The two spent the past couple of years playing in the same infield together.
Szykowny put together a modest breakout in 2025, hitting .816 OPS in 549 plate appearances with the Eugene Emeralds. His 21 home runs ranked third among Giants minor leaguers.
This season with the Richmond Flying Squirrels, he posted a .733 OPS with 14 home runs and 53 RBI in 482 plate appearances. He has shown one of the organization’s better blends of contact and power.
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