SF Giants minor league notes: Cesar Perdomo's promotion, Carlos Gutierrez's steals

The SF Giants had a pair of prospects in Gavin Kilen and Dakota Jordan appear in the Futures Game over the weekend. More news on the minor league front, including Cesar Perdomo's promotion to the Sacramento River Cats.

SF Giants minor league notes: Cesar Perdomo's promotion, Carlos Gutierrez's steals

1. Cesar Perdomo's promotion to Triple-A

The Giants moved Perdomo up to Triple-A last week. Tyler Switalski took his place on the Richmond Flying Squirrels' roster. Switalski had a quality run with the Eugene Emeralds, pitching to a 4.22 ERA with 94 strikeouts and 29 walks in 74.2 frames.

Perdomo is a name to keep an eye on. General manager Zack Minasian joined the Murph and Markus Show on KNBR a couple of weeks ago to discuss potential bullpen options in the minors. Trent Harris was mentioned along with Perdomo.

The left-handed pitcher has had one of the more quietly strong seasons in the Giants farm system this year. With Richmond, he posted a 3.98 ERA, 1.10 WHIP, 1.10 WHIP, and a 4.05 SO/W rate across 72.1 innings. There has been a spike in Perdomo's strikeout rate this year. In five minor league seasons, he has tallied a 9.3 K/9, but that number has jumped up in 2026.

Perdomo has already made one appearance for Sacramento, and he yielded one earned run across five innings.

The 24-year-old pitcher throws from a high, three-quarters arm slot and fills up the zone with his pitch mix. He throws a four-seamer half the time, and that pitch sits in the low 90's. The velocity does not overpower hitters, but there is enough late carry up in the zone to miss some bats. He throws a pair of secondaries that sit in the mid 80's, including a changeup and slider.

There is not a lot of velocity separation between Perdomo's fastball and changeup, but he tunnels the pitches well enough to fool hitters. While he throws the slider more often, the changeup has been a more effective pitch. The Giants should be looking for solutions to help their bullpen beyond this season, and Perdomo could see his name called.

2. Carlos Gutierrez's success on steals

Who has been the most efficient base stealer in the Giants' system? They have a handful of volume base runners, including Trevor Cohen and Andy Polanco. Jonah Cox was in this group before his promotion to the majors.

That said, Carlos Gutierrez has been the most efficient. He has swiped 19 bases in 20 chances. That is a 95% success rate, which leads Giants minor leaguers. Turner Hill (90 percent success rate) and Dakota Jordan (88 percent success rate) have also been some of the more successful base stealers this season.

Gutierrez is a solid runner, but speed is not necessarily a strength in his profile. He uses his speed on the bases better than most, leading to a high success rate on steals. After all, the point of stealing bases is not to get thrown out.

In addition to this, the left-handed bat has flashed more power than he has in the past. He is hitting .259/.365/.435 (117 wRC+) with nine home runs, 38 RBI, and 50 runs in 299 plate appearances. This includes a 13.7 percent walk rate, 20.4 percent strikeout rate, and .179 ISO.

The home run total has exceeded Gutierrez's previous career high as a pro of two. He has a swing designed for contact and spraying line drives all over the field, but he is getting the ball in the air more this year. Good things happen when hitters do that. Similar to Cesar Perdomo, Gutierrez's 2026 campaign has been a nice development in the farm system.

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