Williams is hailed as one of the finest hitters to have ever played the game. He won two MVP Awards and is one of only two players (the other being [Rogers Hornsby]?) to have won the Triple Crown twice.
In 1941, he came to the last game of the season with a batting average of .3996, which would be rounded up to .400 and thus make Williams the first man to hit .400 since Bill Terry in 1930. Given the option by his manager, Williams opted to play and risk losing his record. He got 4 hits in 6 at bats, raising his season average to .406. No one has hit .400 since.
Williams served in the military as a Marine pilot during both World War II and the Korean War (serving in the same unit as John Glenn during the latter).
He retired from the game in 1960 after hitting a home run in his final at-bat. He served as manager for the Washington Senators and Texas Rangers during the 1960s and early 1970s.