The Mets entered 2023 planning to use the platoon/two-headed monster option at the designated hitter spot. It did not work.
Darin Ruf, who struggled badly after being acquired via trade in 2022, was given a chance in spring training to prove his performance down the stretch the year prior was an aberration.
Instead, Ruf showed nothing and was designated for assignment right before Opening Day.
That left the bulk of the DH at-bats to lefty-swinging Daniel Vogelbach, whose main value came from his on-base ability against righties but didn't get on base enough or hit for nearly enough power to justify being the regular DH.
Vogelbach's presence in the lineup but inability to hit left-handers necessitated pinch-hitting for him in any key spot with a left-handed pitcher in the game, and his lack of speed hurt the Mets in the instances where he did reach base.
To put it succinctly, Vogelbach was miscast as a regular DH option, and the Mets put themselves behind the eight ball by relying on him in that role -- then did nothing about it when it clearly wasn't working.
Keeping Ruf all offseason after he showed in 2022 that he was likely cooked as a masher of lefties was also a mistake.
Platoons can work if put together properly, but the Mets' strategy in 2023 had serious holes.
Heading into 2024, their plan should be to rely on one player as the regular DH. But will they?