Thinking he was an underachiever made Nicklaus a better competitor

Jack Nicklaus won 18 professional majors and 73 times on the PGA Tour, which is why he often is referred to as golf's greatest champion. But he is not sure he lived up to his talent.

"I think I underachieved all my life," Nicklaus said on Wednesday at the Memorial. "I think that's why I got better."

In one of the more insightful comments - one that a new generation of players should heed - Nicklaus said it was that attitude that likely led to a career that has not been matched when it comes to the majors.