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Patrick Bailey and Tristan Beck celebrate after the Giants’ 8-1 win over the Pirates on August 5, 2025.
In the late hours of the night, San Francisco Giants insider Shayna Rubin reported that Tristan Beck will make his first start of the season against the Arizona Diamondbacks on Tuesday September 16, 2025.
Tristan Beck will start tomorrow vs. DBacks
— Shayna Rubin (@ShaynaRubin) September 16, 2025
The Giants, who have fallen from 0.5 games out of the third National League Wild Card spot to 2 games out after three straight losses, two to the Los Angeles Dodgers and one to the DBacks, need to win the game on Tuesday to stay in the playoff race.
Beck, 29, will make his first start of the season and the fifth start of his MLB career.
In 26 games this season, mostly serving in a long relief role, Beck has thrown 48 innings and accumulated a 4.88 ERA, with 36 strikeouts and 1 save.
Beck is effectively taking Carson Seymour‘s spot in the rotation. Seymour threw only 1.1 innings and allowed 4 runs in his most recent start, which coincidentally came against the Diamondbacks.
Beck Was Once A Top Starting Pitching Prospect
Since his MLB debut in 2023, Tristan Beck has been almost exclusively a long relief pitcher, save for a few spot starts here and there.
But when he was drafted in the fourth round by the Atlanta Braves in 2018 out of Stanford University, Beck was considered a future rotation arm.
He’s been developed almost exclusively as such throughout his minor league career as well. Before this season, Beck had made 60 starts in 68 appearances in the minor leagues.
Only this season did the Giants seemingly permanently move him to a relief role. He’s made 19 appearances in AAA Sacramento and 26 appearances in the MLB. All of them have come in relief.
His most recent start at any level was on September 28, 2024 for the Giants against the St. Louis Cardinals. In that game, Beck threw 4 innings and allowed 4 hits and 1 run, walking 2 batters and striking out 3. The Giants went on to beat the Cardinals 6-5.
That doesn’t mean Beck doesn’t still have the longevity to eat up innings for the Giants. In his longest appearance of the 2025 season, on July 18 against the Toronto Blue Jays, Beck threw 4.1 innings and allowed only 1 hit and 0 runs.
The concern is not the longevity for Beck, it’s the leverage. The Giants moved on from him as a starter in 2024 after he had a 7.90 ERA in 5 starts in AAA Sacramento that season.
But remember, Beck was also out for most of 2024 after having surgery to remove an aneurysm from his arm.
Could Beck resurrect his chances at cracking the Giants rotation with a good start on Tuesday? Or are they using him strictly in an emergency capacity?
Giants’ Back of Rotation Struggles
The list of pitchers the Giants have used to try to shore up the back of the rotation just gets longer and longer.
The Giants’ top four starting pitchers, Logan Webb, Robbie Ray, Landen Roupp and Justin Verlander, have been MLB caliber starters.
But, given that Verlander and Roupp have missed time with injuries, at times the Giants have had to fill 2 rotation spots with unproven pitchers. The results haven’t been pretty.
Jordan Hicks, Kyle Harrison, Hayden Birdsong, Kai-Wei Teng, Carson Whisenhunt, and Carson Seymour have all tried, and failed, to establish themselves as a core part of the Giants’ rotation moving forward.
Verlander could potentially depart San Francisco this offseason. So the Giants may need to fill 2 starting rotation spots. They currently have 0 clear frontrunners to take those spots.
They also just need to win a ballgame to stay alive in the playoff hunt.
All of that makes this a very interesting return to starting pitching for Tristan Beck.
Giants fans, do you think he can take advantage and turn in a great start for the Giants?
Ethan Inman is a sports journalist covering the San Francisco 49ers, San Francisco Giants and Las Vegas Raiders for heavy.com. He also co-hosts a college football podcast for The Voice of College Football, and writes about the NBA and MLB. He has previously covered the USC Trojans, the NHL, college baseball, and the intersection of sports and popular culture for other publications. He is based in the greater Los Angeles area. More about Ethan Inman
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