In 1941, Williams posted a .406 batting average; he is the last MLB player to bat over .400 in a season. He followed this up by winning his first Triple Crown in 1942
The color line, also known as the color barrier, in American baseball excluded players of black African descent from Major League Baseball and its affiliated Minor Leagues until 1947 (with a few notable exceptions in the 19th century before the line was firmly established)
Also Ted didn't face Hispanic/Latino players.