Clapp graduated from
Texas Tech University, where he played for the
Red Raiders baseball team. He still holds (or shares) the Red Raiders' records for triples in a season (eight), runs in game (five, three times), strikeouts in a game (four) and walks in a season (66), both set during the 1996 season. He was drafted by the St. Louis Cardinals in the 36th round (1,058th overall) of
1996 amateur entry draft. In 1998, when playing for the
Double-A Arkansas Travelers, he led the league with 86 walks and 139 games played. He remains popular among Travelers fans to this day. He also played for the
Edmonton Cracker Cats. Clapp was also popular in
Syracuse, New York, and other cities where he played. In 1999, Clapp was part of the Canadian team at the Pan American Games in Winnipeg. A popular player with his teammates, Clapp became a minor celebrity in Canada after his game-winning, bases-loaded single against the U.S. team. From –, he played for the Triple-A Memphis Redbirds. In 2000, he led the team with 138 hits, 89 runs, 80 walks, eight triples, and six sacrifice hits. He is second all-time for the Redbirds for games played (425) and hits (418). He was noted for doing a backflip every time he went onto the field. In , Clapp played 23 games for the St. Louis Cardinals, during which he had five
hits in 25
at-bats, including two
doubles and one RBI. Clapp became a popular figure in
Memphis, Tennessee, during his four-year stint with the Redbirds. He was often referred to as the "Mayor of Memphis". During the 2002 season, the Clapp was featured on a growth chart for kids sponsored by a Memphis-area medical group. In 911 minor-league games, Clapp had a .270
batting average, 48
home runs, 50 triples, 196 doubles, 365 RBI, and 83
steals. Clapp also pitched in three games, pitching a total of innings, giving up two hits and no earned runs. He was part of Team Canada in the
2004 Summer Olympics who finished in fourth place. In 2006, Clapp played for Canada in the inaugural
World Baseball Classic as one of two second basemen on the roster. In three games, Clapp hit .154, with a
triple and an
RBI. In 2009, he was named one of the Memphis "Athletes of the Decade". ==Post-playing career==