finisher

noun

1.
(baseball) a relief pitcher who can protect a lead in the last inning or two of the game
closer
Derived from:
finish
2.
a racing driver who finishes a race
3.
a painter who applies a finishing coat
Derived from:
finish
4.
a worker who performs the last step in a manufacturing process
Derived from:
finish
5.
a race car that finishes a race
6.
an animal that wins in a contest of speed