a competitor
That person is an athlete.
a boarder
Grandpa puts in the entry for the contest.
win a contest in magazine that enters him
conductor
The Lucy Show - 1962 Lucy Enters a Baking Contest 2-28 was released on: USA: 27 April 1964
When Pete made his decision to throw the pepper eating contest against Hilario.
He enters them into a coon hunting contest
In the Iliad, Odysseus enters multiple contests including wrestling and running during the funeral games for Patrochlus. After the events of the Iliad, during Achilles' funeral games, Odysseus enters a contest with Telemonian Ajax over who is the bravest Greek warrior. In the Odyssey, Odysseus enters a contest of who can string his bow and shoot an arrow cleanly through 12 axe handles. The prize to this contest is the hand of Penelope, his wife.
He hasn't won any... But if he enters he could!
Any episode she enters a contest
Jackpot!
Same as preparing for any contest, practice practice practice.