The Giants have lost another coach from last year’s staff, as first-base coach Mark Hallberg will join the Minnesota Twins as a bench coach under recently hired manager Derek Shelton, the Twins announced on Friday.
President of baseball operations Buster Posey told reporters this week in Las Vegas during MLB’s GM Meetings that Hallberg, his roommate at Florida State, and catching coach Alex Burg were deciding whether to stay with the Giants or pursue other options.
“He’s one of those that we’d love to have back, but he has been kind of a popular guy with some other teams, as well,” Posey said on Tuesday. “We’re working through that.”
Hallberg, 39, spent six seasons on the Giants’ coaching staff under former managers Gabe Kapler and Bob Melvin. Over the years, he served as an assistant coach (2020–21), third-base coach (2022–23), and first-base coach (2024–25).
Along with Hallberg, several other coaches will not be returning under new manager Tony Vitello’s staff. Bench coach Ryan Christenson, pitching coach J. P. Martinez, bullpen coach Garvin Alston, hitting coach Pat Burrell, assistant hitting coach Damon Minor, and third-base coach Matt Williams have all departed.
Posey confirmed earlier this week that assistant hitting coach Oscar Bernard, quality control coach Taira Uematsu, and bullpen catcher Eliezer Zambrano will be back next season. However, it remains undecided whether catching coach Alex Burg will return.
The Giants’ returning staff will be joined by former San Diego Padres manager Jayce Tingler and former Toronto Blue Jays assistant hitting coach Hunter Mense. While Tingler’s specific role has yet to be announced, Mense will replace Pat Burrell as San Francisco’s new hitting coach.
Blue Jays general manager Ross Atkins praised Mense during the Las Vegas meetings, saying, “He’s exceptionally disciplined and very bright. He brought those attributes into our process, connected well with our players, and made a big difference for us over the years.”
Additionally, Quentin Eberhardt is leaving the University of Tennessee to become the Giants’ director of performance, according to Mike Wilson of the Knoxville News Sentinel. Eberhardt spent seven seasons as Tennessee’s strength coach under Vitello, with two stints at the program and a brief period with the Chicago Cubs as head strength and conditioning coach in between.
This series of changes marks a significant reshuffling of the Giants’ coaching staff as the organization prepares for the upcoming season under new leadership.
https://www.mercurynews.com/2025/11/14/sf-giants-lose-another-coach-as-hallberg-takes-job-with-twins/