sentences:  After two strong season in the minors, Walker joined the Detroit Tigers in 1931, making his major league debut on April 15, 1931.He appeared in 90 games, 61 as a center fielder, and compiled a .286 batting average and a .355 on-base percentage.Walker returned to the minor leagues in 1932 where he played for the Toronto Maple Leafs of the International League (1932), Montreal Royals of the International League (1932-1934), Jersey City Skeeters of the International League (1933), and Toledo Mud Hens of the American Association.