Etcheverry set a single-game passing record of 586 yards in 1954 that stood for 39 years until the 1993 CFL season. He also set a season passing record in 1954 of 3,610 yards that was not only a CFL record but also eclipsed the NFL record set in the 1947 NFL season by Pro Football Hall of Famer Sammy Baugh of the Washington Redskins. He led the CFL in passing from 1954 to 1959. In 1956, he became the first professional quarterback to pass for over 4,000 yards; his record of 4,723 passing yards would stand until 1981 when it was passed by Dieter Brock and Dan Fouts. Etcheverry still holds the record for most passing yards in a Grey Cup game with 508 set in a loss to the Edmonton Eskimos in the 1955 game.