[3] He also became International Boxing Organization and United States Boxing Association flyweight champion,[4] before retiring in 2002, having recorded 34 wins, 25 knockouts, 4 losses and 2 draws, one of his losses, a 10th-round knockout defeat against Michael Carbajal in a long-awaited bout.
[6] On the morning of January 18, 2015, Olson suffered a near-fatal heart attack at his home.
He was placed in a medically induced coma, after which two stents were put into his heart.
Doctors were initially concerned about his condition since his brain had been deprived of oxygen for "a period of time," but Olson came out of the coma about a week after the heart attack, and was released from the hospital a week after that.
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