9) Roger Cedeno
The Mets signed Roger Cedeno in December of 2001 to a 4 year, $18 million contract. Once an integral part of the 1999 team that won 97 games, Cedeno was a shell of his former self just a few years later.
Cedeno spent two seasons of his 4-year contract with the Mets, racking up -0.5 WAR in that span before being traded to the Cardinals for Wilson Delgado.
Suddenly, as soon as he was signed by New York, Cedeno no longer hit for average and saw sharp declines in the amount of stolen bases he accumulated. He also played poor defense in the outfield with -1.0 and -1.2 dWAR in the 2002 and 2003 seasons respectively.
Delgado played 42 games at shortstop for the Mets in 2004 and was subsequently out of major league baseball forever. Meanwhile, Cedeno totaled 132 underwhelming games for the Cardinals between 2004 and 2005 before being released and never playing in a major league uniform again.
Cedeno can’t be hated too much by Mets fans given his productive performance in 1999 when he slashed .313/.396/.408 and stole 66 bases. But, whereas Cedeno was acquired via trade before the 1999 season, the contract he ultimately signed before 2002 will live on as a waste of money on a team that averaged just 73.75 wins and never made the playoffs between 2002 and 2005.