Career
He entered the top 100 in 2004, reaching a career-high singles ranking of World Number. 63 in March 2005. Kim lost to Russell in the finals of the 1994 USTA National Boys" 16 Singles Championships. He beat Russell in the finals of the 1994 USTA National Boys" 16 Clay Court Championships, and lost to Russell in the finals of the 1994 Easter Bowl Boys" 16s Championships.
In 1995, he lost to Russell in the finals of the USTA National Boys’ 18 Clay Court Championships.
Kim reached the second round in singles and the quarterfinals in doubles with Russell at the 1995 Australian Open Junior Championships. At the 1996 USTA National Boys’ 18 Championships, he lost in the doubles final with Russell to Bob and Mike Bryan.
He was a doubles quarterfinalist with Russell at the 1996 Wimbledon junior championships.