Who said "Championships aren't won in the off-season."?

This quote is attributed to Usain Bolt.

Championships aren't won in the off-season. - Usain Bolt

"Championships aren't won in the off-season."

Usain Bolt

Professional Sprinter Jamaican Born 1986 (age 40)

"To be a champion, you have to believe in yourself when no one else does."

"Don't think about losing. Just think about winning."

"I'm a living legend."

"Volleyball is my life."