10. Carlos Delgado
Carlos Delgado's time in New York might've been limited, but he left his mark. In his three years (and 26 in year four, Delgado slashed .267/.351/.506 with 104 home runs and 336 RBI.
For his time in Queens Delgado was sandwiched in between Carlos Beltran and David Wright in the lineup and he made the most of it. For a franchise that has lacked power hitters, Delgado is one of the franchise's best.
From 2006-2008 Delgado averaged 33.3 home runs per season. Every time he went up to bat he was a threat. And there was nothing opposing teams could really do because one of Beltran or Wright was always hitting behind him so Delgado was often the one getting pitched to.
While the Mets underperformed and suffered a disappointing loss in the 2006 NLCS at the hands of the Cardinals, Delgado was not the reason why. He slashed .304/.448/.826 with three home runs and nine RBI in the seven game series. He slashed .351/.442/.557 in the entirety of those playoffs, his only playoff appearance in his borderline Hall of Fame career.
While Delgado never led the league in home runs as a Met, he's still one of the best power hitters the franchise has ever had.