LOS ANGELES - Former UFC heavyweight champion Brock Lesnar has ruled out a return to mixed martial arts, ending three years of speculation about the biggest pay-per-view star in the sport's history.

Lesnar announced he had re-signed with the WWE in an interview on ESPN's "SportsCenter" on Tuesday.

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Lesnar tells The Associated Press he was in training for a UFC return as recently as last week despite his conflicted feelings about it. He finally decided to stick with professional wrestling only in the past two days.

PhotosBrock Lesnar photos from his first UFC run

Lesnar says he turned down an offer worth "10 times" what he was making earlier in his MMA career. The UFC even attempted to increase its offer when he phoned its executives about his decision while driving into the parking garage at ESPN's downtown Los Angeles studios.