42. Jay Payton (Rockies career WAR 4.7)
Payton is probably another player no one outside of true seamheads will remember. But he is another example of a productive short-term addition. His career year was 2002 when he slashed .302/.354/.512 with 28 HR and 89 RBI for an OPS+ of 110. He also provided above average defense, which is invaluable in the vast pastures of Coors Field. He never committed more than four errors and averaged six Outfield Assists as a Rockie.