She was born to Syd and Kriss Yamasaki. She has a sister named Britt, and a brother named Kobi. Lindsey attended Oregon City High School where she led the women's basketball team to four Oregon state championships and finished #1 in the USA Today national rankings for three years. Lindsey was one of the most sought-after recruits for college basketball when she graduated in 1998 and was named the most highly recruited female athlete of 1998. Yamasaki was named a WBCA All-American. She participated in the WBCA High School All-America Game, where she scored sixteen points, and earned MVP honors.
On full scholarship at Stanford University, Lindsey led the team to the Pac-10 regular season championship in her senior season, 2001-2002. Lindsey's Stanford women's basketball teams made the NCAA Division I Women's Basketball tournaments every year, but never won more than two games. Lindsey's 4-year statistics at Stanford were 13.9 points per game, 44.3% field goal percentage, 38.9% 3-point field goal percentage.
During the 2002 WNBA Draft, 6'2" Lindsey was the 13th pick in the 2nd round (29th overall) to the now-defunct Miami Sol, averaging 3.5 points per game in 15 games in 2002. In 2003, Lindsey played 24 games for the New York Liberty averaging 0.7 points. She also played in the National Women's Basketball League for the San Jose Spiders, in Turkish Women's Basketbol League for Ceyhan Belediyespor and Botas Spor as well as for the San Antonio Silver Stars where she tore her right Achilles in June 2005. In 2006 she trained with the Seattle Storm in pre-season and was released by the team in May 2006 after which she decided to retire.