For PCL fans, Ox Eckhardt. Per Wikipedia:
Oscar George "Ox" Eckhardt (December 23, 1901 – April 22, 1951) was an outfielder for the Boston Braves and Brooklyn Dodgers. Eckhardt holds the known all-time professional baseball record for batting average, counting both major and minor league stats: .365 (Ty Cobb holds the major league record, .366, but Cobb's minor league average of .304 lowers his total professional-ball average to .364, second behind Eckhardt. Eckhardt hit .192 in the major leagues, but in just 52 at bats, so his known minor league average of .366 was lowered just one point.) In spite of his outstanding ability to hit for average, Eckhardt – a poor fielder who lacked much home run power – was never able to establish himself in the major leagues. In 1933, he hit .414 for the San Francisco Missions, which is still the PCL (Pacific Coast League) record. In 1935, he again won the PCL batting title, edging out 20-year-old Joe DiMaggio, .399 to .398. This finally earned him a slot on a major league club, the 1936 Brooklyn Dodgers, with a chance to win a job as a regular. But Eckhardt was 36 years old by then, was still a poor fielder with little power, and in ten starts hit just .182 in 44 at bats. He was sent back to the minors, never to return. Eckhardt also played halfback and quarterback for the Texas Longhorns, and professionally as a halfback in 11 games for the New York Giants of the National Football League.
