[1] He was named an All-American for the 1937 Pacific Coast Conference and national champion "Thunder Team", which went on to win the 1938 Rose Bowl; the last time California has won the game.

In the latter year he had his best season, finishing fifth in the AL in both slugging average (.543) and total bases (300), with a career-best 25 home runs.

[5] He joined the Navy for World War II after the 1941 season,[6] and served as a pilot and flight instructor in Corpus Christi, Texas.

After leaving baseball, Chapman became an inspector for the Bay Area Air Pollution Control District.

[12] Chapman died at an assisted-living residence in Kentfield, California, at the age of 90, after suffering from Alzheimer's disease for several years.