2) Starling Marte
The Mets couldn't have gotten much more from Starling Marte in year one of a four-year deal he signed in the 2021 offseason. He was the perfect number two hitter behind Brandon Nimmo and in front of Francisco Lindor and even made his second all-star team. This season, he looked like a completely different player.
Through 86 games this season, the veteran outfielder slashed .248/.301/.324 with five home runs and 28 RBI. The 24 stolen bases he had were encouraging, but his bat was sluggish all year and his defense took a step back as well.
Marte was pretty clearly playing with some discomfort all year as he was recovering from offseason groin surgery, but he looked like a shell of the player he was when he was on the field. Hopefully the second half he missed due to the injury plus the entire offseason gives him enough time to get right for the 2024 season.
Due to his contract and the lack of alternative options, Marte's spot in right field is solidified at least for Opening Day if he's healthy. It's on him to earn the trust back of the fans who adored him when he was an all-star the season prior.