Career
Williamson was the number one player for Columbia University before joining the professional circuit in 1987. At the 1987 United States Open, Williamson made it through qualifying and faced Australian John Fitzgerald in the first round. He was beaten in straight sets.
Williamson played only in the men"s doubles at the 1989 United States Open, with Nduka Odizor.
They lost in the opening round to Scott Davis and David Pate. Also that year, Williamson teamed up with Todd Nelson at the Boston Pro Championships and the pair finished runners-ups.
He also competed in the main draw of the United States Open in 1991 and 1993, but was unable to progress past the first round.
