Biography: Anthony Allen (born January 11, 1982), nicknamed "the Grindfather," is an American former professional basketball player who played for 14 seasons in the National Basketball Association (NBA), primarily for the Boston Celtics and Memphis Grizzlies. He is a six-time member on the NBA All-Defensive Team, including three first-team selections. Allen won an NBA championship with the Boston Celtics in 2008. Known for his suffocating on-ball pressure, he is widely regarded as one of the best defenders in NBA history.