Key Highlights
- The San Francisco Giants acquired outfielder Joey Wiemer from the Miami Marlins in exchange for cash.
- Catcher Andrew Knizner was designated for assignment by the Giants as part of a corresponding roster move.
- Wiemer, 26, has seen his stock decline after appearing on top-100 prospect lists in recent years.
- Knizner, 31, is out of minor league options and could be non-tendered by the Giants before tonight’s deadline.
The San Francisco Giants Land Joey Wiemer in a Contested Trade
On November 21, 2025, the San Francisco Giants made a strategic move to bolster their outfield depth by acquiring outfielder Joey Wiemer from the Miami Marlins. The trade was officially announced by team officials and involved an exchange of cash for the former top prospect.
The Giants designated catcher Andrew Knizner for assignment in a corresponding roster move, which comes at a critical juncture as the team looks to trim its 40-man roster ahead of the upcoming season. At 31 years old, Knizner is out of minor league options and could be non-tendered by the Giants before tonight’s 5pm ET deadline.
Joey Wiemer: A Journeyman Outfielder
Wiemer, who was the Brewers’ fourth-round pick in 2020, has seen his stock dwindle since appearing on MLB.com’s top-100 prospect lists in both 2022 and 2023. The outfielder has appeared in parts of three major league seasons, playing for the Brewers, Reds, and Marlins before joining the Giants.
In his rookie season with the Marlins this year, Wiemer showcased a promising power output, hitting 13 home runs while stealing 11 bases. However, his rate stats were underwhelming.
Over 499 trips to the batter’s box in the majors, he has compiled a career batting line of .205/.279/.359.
Despite these numbers, Wiemer stands out as a potential plus defender. His defensive metrics indicate that he can play all three outfield spots at a high level, with positive marks in all individual positions and collective 11 Defensive Runs Saved and 7 Outs Above Average over 1249 innings of work.
Wiemer’s ability to hit lefties is particularly noteworthy. In 173 plate appearances against southpaws, he has produced a .255/.298/.484 batting line (106 wRC+), suggesting that he could be a valuable bench option for the Giants in platoon scenarios.
Andrew Knizner: A Catcher’s Dilemma
Catcher Andrew Knizner, 31 years old and out of minor league options, faces an uncertain future with the Giants. He hit .221/.299/.299 in 88 trips to the plate this season but has struggled with blocking pitches and controlling the run game. His career batting line stands at a modest .211/.281/.316 over 975 plate appearances.
With the Giants looking for roster cuts, Knizner’s fate is uncertain as he could be non-tendered prior to tonight’s deadline. The team has already been exploring trade opportunities for Knizner but may not find a suitable partner in time.
Implications and Future Outlook
The Giants’ moves indicate their ongoing efforts to adjust the roster ahead of the new season, particularly in light of potential financial constraints post-World Series. By acquiring Wiemer and designating Knizner for assignment, the team is making strategic decisions to optimize its 40-man roster.
Industry insiders suggest that the Giants may consider platooning right-handed-hitting outfielder Drew Gilbert with lefty-swinging Wiemer in right field. Meanwhile, former top prospects Luis Matos and Marco Luciano could also compete for similar roles but have seen their prospect stock diminish recently.
The trades reflect a complex interplay of player development, financial considerations, and strategic planning as the Giants navigate the final days of the offseason.
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