Walter Johnson pitched 18 innings in a complete-game shutout of the White Sox on May 15, 1918.

The Senators’ 19-year-old rookie right-hander Walter Johnson makes his major league debut

The Senators’ 19-year-old rookie right-hander Walter Johnson makes his major league debut, losing to the Tigers, 3-2. Ty Cobb, with a bunt single, gets the first hit off of the future Hall of Famer, who will finish with a 417-279 (.519) record while compiling an ERA of 2.17 during his 21-year big-league tenure, all with Washington.