Joey

Wiemer

Wiemer was once a top prospect in the Brewers organization, but spent last season with the Marlins. He hit .236/.279/.436 with three homers, 12 RBI, and a 23/2 K/BB ratio in 61 plate appearances for Miami before being designated for assignment. He was then traded to the Giants in the offseason before the Giants also designated him for assignment in December to make room for Jason Foley. Wiemer is a strong defender and will try to make the Nationals as a fourth outfielder.

Wiemer was acquired from the Marlins by the Giants in November, and there’s a good chance he won’t play a game for San Francisco. He hits the waiver wire with the signing of Jason Foley now official.

The Giants add an intriguing piece to their outfield mix and didn’t have to give up anything of substance to do so. A phenomenal defender, the dynamic 26-year-old could easily work his way onto the Giants’ Opening Day roster with a strong showing in Cactus League play.

No word yet on what the Marlins will receive in return. The 26-year-old former top prospect was designated for assignment by the Marlins earlier in the week. Wiemer struggled in his limited big league action in 2025, slashing .236/.279/.436 with three homers, 12 RBI and a 23/2 K/BB ratio in 61 plate appearances with the Fish. The Giants will be the fourth team in three years to take a shot at unlocking his true potential. Given his defensive prowess, a strong spring could easily earn Wiemer a spot on the club’s Opening Day roster.

Wiemer loses his spot on Miami’s 40-man roster to make room for a couple additions to the club’s 40-man roster ahead of next month’s Rule 5 Draft. The 26-year-old former prospect got into 27 games this past season for the Marlins.

Wiemer is up with Dane Myers (knee) placed on the injured list. The 26-year-old outfielder will likely see a start or two — maybe more — over the final five games of 2025.

Wiemer heads back to the minors with Griffin Conine returning from the injured list after batting .293 (13-for-52) with three homers across 23 games this season at the highest level.

Wiemer did his damage off of Chris Paddack in the sixth inning, launching a 417-foot (106.7 mph EV) three-run shot that extended the Marlins’ lead to 8-1. That would be his only hit in the ballgame. For the season, the 26-year-old outfielder is hitting .255/.275/.489 with three homers and 11 RBI in 51 plate appearances with the Marlins.

The homer was Wiemer’s first in the majors since 2023, when he hit 13 as a rookie for the Brewers. He’s hitting .259/.276/.507 in 29 plate appearances for the Marlins, though the 14/0 K/BB doesn’t bode well. He figures to keep playing against lefties for the most part.

Myers will sit out Sunday’s contest after making an early exit from Saturday’s game with right side discomfort. The encouraging development here is that he hasn’t been placed on the injured list yet. It’ll be Joey Wiemer taking over in right field in his absence.