Career
Harper-Griffith was a boy"s singles quarter-finalist at the 1999 Australian Open and a boy"s doubles semi-finalist (with Andy Roddick) at the 1999 United States Open. He also competed with Roddick in the men"s doubles draw at the 1999 United States Open and they made the second round. At the 2001 United States Open, Harper-Griffith lost to Spaniard Albert Costa in the opening round of the men"s singles.
lieutenant would be his only appearance in the men"s singles draw of a Grand Slam but he did make another United States Open doubles appearance, in 2002, with Eric Taino.
The pair defeated Dominik Hrbatý and Andre Sa in the first round, before being eliminated in the second round by Jiri Novak and Radek Štěpánek. Singles: (1)
Doubles: (1).