43 NFL players who spent time in other leagues

Arena, the USFL, CFL and other leagues have been the path to the NFL for some players.

Joe Kapp

Jesse Grant/Getty Images for Turner

An 18th-round pick in 1959 by the Washington Redskins out of Cal, Kapp was forced to sign with the Calgary Stampeders after Washington didn’t contact him after the draft. The following year, he led Calgary to their first playoff appearance in years. In 1961, the BC Lions traded for Kapp and he helped lead them to a Grey Cup appearance in 1963. In 1964, he led the Lions to their first Grey Cup victory. Before the start of the 1967 season, Kapp returned to the U.S. to play in the NFL. He signed with the Minnesota Vikings in a multi-player “trade” between the CFL and NFL teams, one of the few transactions to occur between the leagues.