The Giants optioned Whisenhunt to Triple-A Sacramento on Wednesday, Justice delos Santos of The San Jose Mercury News reports.
Though Whisenhunt had shown improved velocity during spring training, he struggled with his command and control. Over four appearances (two starts) during Cactus League play, Whisenhunt was charged with 10 earned runs on eight hits and eight walks while striking out 14 batters over 9.1 innings. With Whisenhunt sent down and with Hayden Birdsong (forearm) set to begin the season on the injured list, Trevor McDonald and Carson Seymour would appear to be first in line to join the San Francisco rotation if a spot were to open up.
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Giants' Carson Whisenhunt: Struggles in spring game
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Whisenhunt logged a blown save in Monday's 6-5 Cactus League win over the White Sox, allowing four earned runs on five hits and a walk while striking out two across 1.2 innings.
Whisenhunt entered in the third inning and surrendered two singles and a double that led to two runs. He then allowed a walk and two doubles before being pulled in the fourth, as the White Sox took a 4-3 lead. On a more positive note, the southpaw averaged 95.6 mph on his four-seamer, a significant uptick from his average of 92.6 mph in 2025. The 25-year-old could compete for a spot in the bullpen ahead of Opening Day, but it wouldn't be surprising if he begins the season in Triple-A Sacramento's rotation. He recorded a 5.01 ERA, 1.46 WHIP and 16:12 K:BB while giving up six long balls across 23.1 innings in five starts for San Francisco last season.
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Giants' Carson Whisenhunt: Velocity up in Giants camp
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Whisenhunt was sitting 96-97 mph during a simulated game Thursday, Justice delos Santos of The San Jose Mercury News reports.
Delos Santos notes that the readings were courtesy of Trackman, so it's a legitimate velocity increase for Whisenhunt, who averaged 92.6 mph with his four-seamer last season. It will be interesting to watch whether the southpaw is able to carry the velocity spike into Cactus League play and the regular season, as it could help spur a breakout. Whisenhunt entered spring training likely on the outside looking in for a spot in the Giants' rotation after holding a 5.01 ERA and 16:12 K:BB over 23.1 innings covering five starts in 2025.
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Giants' Carson Whisenhunt: Fans two in rehab game
Rotowire
Whisenhunt (back) allowed one earned run on two hits and two walks while striking out two across three innings in Triple-A Sacramento's 4-2 loss to Round Rock on Sunday.
Whisenhunt was placed on the 15-day injured list Aug. 31 due to a back strain but appears to be nearing a return to the big leagues. He made his first rehab appearance against Round Rock last Tuesday, giving up three runs (two earned) over 1.2 innings while tossing 25 of his 39 pitches for strikes. The left-hander stretched out slightly Sunday, throwing 46 pitches (30 strikes). If the 24-year-old returns to the majors ahead of the regular-season finale Sunday, he'll likely replace Trevor McDonald or Kai-Wei Teng in the rotation.
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Giants' Carson Whisenhunt: Slated for rehab outing Tuesday
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Whisenhunt (back) is expected to throw a couple innings in a rehab appearance Tuesday with Triple-A Sacramento, Justice delos Santos of The San Jose Mercury News reports.
Whisenhunt was placed on the 15-day injured list Aug. 31 due to a back strain but won't require a lengthy stay on the shelf. After completing a bullpen session Sunday that incorporated all of his pitches, Whisenhunt will make an abbreviated rehab appearance Tuesday before potentially rejoining the Giants next weekend. San Francisco has been getting by of late with Kai-Wei Teng and Carson Seymour as its back-end starters, but Whisenhunt could replace either pitcher in the rotation once he's activated.
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Giants' Carson Whisenhunt: IL stint expected to be brief
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Whisenhunt isn't expected to miss extended time due to the back strain that landed him on the 15-day injured list Sunday, Susan Slusser of the San Francisco Chronicle reports.
Whisenhunt is eligible for activation Sept. 12, and he could have a good shot at returning on that date or close to it. The rookie left-hander holds a 5.01 ERA and uninspiring 16:12 K:BB over 23.1 frames covering five starts with the Giants this season.
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Giants' Carson Whisenhunt: Out with back strain
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The Giants placed Whisenhunt on the 15-day injured list Sunday due to a back strain, Shayna Rubin of the San Francisco Chronicle reports.
The left-hander presumably suffered the injury during his start Wednesday against the Cubs, during which he picked up the win after allowing three runs across five innings. Whisenhunt will be eligible to be reinstated in mid-September, though it's unclear if he's expected to be healthy by that point. Kai-Wei Teng was called up from Triple-A Sacramento in a corresponding move and will take Whisenhunt's place in the rotation Monday at Colorado.
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Giants' Carson Whisenhunt: Call-up official
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The Giants recalled Whisenhunt from Triple-A Sacramento ahead of his start against the Brewers on Friday.
Whisenhunt officially joins the 26-man roster, taking the place of Landen Roupp (knee). The 24-year-old Whisenhunt made his MLB debut in late July with three starts for the Giants, posting a 5.02 ERA and a 12:7 K:BB across 14.1 innings before being sent back down Aug. 12. Whisenhunt's numbers at Sacramento weren't much better, as he tallied a 4.37 ERA and 92:32 K:BB across 103 innings.
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Giants' Carson Whisenhunt: Confirmed as Friday starter
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The Giants will recall Whisenhunt from Triple-A Sacramento to start Friday's game versus Milwaukee, Justice delos Santos of The San Jose Mercury News reports.
Whisenhunt made his MLB debut earlier this season and has started three games for the Giants in 2025, turning in a 1-1 record, 5.02 ERA, 1.40 WHIP and 12:7 K:BB across 14.1 innings. He's surrendered five home runs across those three outings and will have a tough road matchup versus the Brewers, who rank third in MLB with 653 runs scored.
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Giants' Carson Whisenhunt: Likely to start Friday
Rotowire
Whisenhunt has been added to the Giants' taxi squad and appears likely to get called up from Triple-A Sacramento to start Friday's game in Milwaukee, Shayna Rubin of the San Francisco Chronicle reports.
The Giants have a pair of rotation spots open following an injury to Landen Roupp (knee) and the demotion of Kai-Wei Teng. One of those slots will be filled by Whisenhunt, who has made three starts for the Giants this season, collecting a 5.02 ERA and 12:7 K:BB across 14.1 frames. The lefty doesn't make for a desirable streaming option on the road against a tough Brewers lineup.
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Giants' Carson Whisenhunt: Cruises to first win
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Whisenhunt (1-0) earned the win in Sunday's 12-4 contest against the Mets, allowing two runs (one earned) on three hits and two walks with four strikeouts over 5.1 innings.
The rookie southpaw dazzled in this 75-pitch outing, as he limited the New York lineup to just one extra-base hit to secure his first career victory. The only earned run on Whisenhunt's performance came in the opening frame, when he conceded a 368-foot solo shot to Francisco Lindor. Through 10.1 total innings, Whisenhunt owns a 4.35 ERA, 1.16 WHIP and 7:4 K:BB. Given this performance, the 24-year-old should continue to stick in the San Francisco rotation since he has looked sharper than Kai-Wei Teng, who allowed four runs in a five-inning no-decision Saturday. Whisenhunt currently lines up to make his next start against Washington at home next weekend.
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Giants' Carson Whisenhunt: Drawing another start
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Whisenhunt is slated to start Sunday's game against the Mets at Citi Field.
Whisenhunt will remain in the rotation for at least one more turn after he had a so-so showing in his MLB debut against the Pirates on Monday, when he took a no-decision after giving up four earned runs on five hits and two walks while striking out three over five innings. Landen Roupp (elbow) could be on track to return from the injured list by the end of next week, but the Giants will still have one rotation spot left over for either Whisenhunt or right-hander Kai-Wei Teng, who will be making his first MLB start Saturday. How Whisenhunt and Teng both fare this weekend may be a deciding factor in which of the two sticks around in the big-league rotation on a longer-term basis.
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Giants' Carson Whisenhunt: Contract selected ahead of debut
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The Giants selected Whisenhunt's contract from Triple-A Sacramento ahead of his start against the Pirates on Monday, Alex Pavlovic of NBC Sports Bay Area reports.
Whisenhunt is set to make his major-league debut Monday, three years after being selected by the Giants in the second round of the 2022 MLB Draft. The 24-year-old southpaw has an 8-5 record across 18 starts in Triple-A this season with a 4.42 ERA, 1.34 WHIP and 86:28 K:BB across 97.2 innings. With Landen Roupp (elbow) on the 15-day injured list, a good outing would give Whisenhunt the opportunity to remain in the Giants' rotation.
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Giants' Carson Whisenhunt: Set for major-league debut Monday
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Whisenhunt is expected to be called up from Triple-A Sacramento to start Monday's contest versus the Pirates in San Francisco, Alex Pavlovic of NBC Sports Bay Area reports.
Whisenhunt will be making his major-league debut Monday, stepping into one of the rotation spots that opened up after the Giants optioned Hayden Birdsong to Triple-A and placed Landen Roupp (elbow) on the injured list. The 24-year-old has posted a 4.42 ERA and 1.34 WHIP with 86 strikeouts over 97.2 innings in 18 starts at Triple-A this season. With an impressive showing against the Pirates, Whisenhunt could stick around with the Giants for multiple turns through the rotation.
Whisenhunt (elbow) will face hitters Thursday, Susan Slusser of the San Francisco Chronicle reports.
Whisenhunt has been slow-played this spring after he ended last season in the minors with a sprained left elbow. He could be cleared to pitch in games before the Cactus League schedule runs out. Assuming health, Whisenhunt is likely to begin the season at Double-A Richmond.
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Giants' Carson Whisenhunt: Faring well in rehab
Rotowire
Whisenhunt (elbow) is making solid progress in his rehab work and is on track for a normal spring training, Alex Pavlovic of NBC Sports Bay Area reports.
This is promising news for the southpaw, who was placed on the 7-day injured list earlier this month due to a left elbow sprain. The team was initially concerned that Whisenhunt would need Tommy John surgery or a different elbow procedure, but this latest update allows San Francisco to breathe a sigh of relief.
