THOUSAND OAKS, CA - JULY 15: Wide receiver Bob Hayes #22 of the Dallas Cowboys poses for his headshot during training camp at Cal Lutheran College on July 15, 1967 in Thousand Oaks, California. (Photo by NFL Photos/Getty Images)

LOS ANGELES - JANUARY 15: Dallas Cowboys wide receiver Bob Hayes #40 of the East watches from the sideline against the West in the 1966 NFL Pro Bowl at the Los Angeles Memorial Coliseum on January 15, 1966 in Los Angeles, California. The East defeated the West 36-7. (Photo by NFL Photos/Getty Images)

LOS ANGELES - NOVEMBER 23: Wide receiver Bob Hayes #22 of the Dallas Cowboys catches a pass in front of defensive back Jim Nettles #19 the Los Angeles Rams on November 23, 1969 at the Los Angeles Memorial Coliseum in Los Angeles, California. The Rams defeated the Cowboys 24-23. (Photo by James Flores/NFL Photos/Getty Images)

THOUSAND OAKS, CA - JULY 15: Wide receiver Bob Hayes #22 of the Dallas Cowboys poses for his headshot during training camp at Cal Lutheran College on July 15, 1972 in Thousand Oaks, California. (Photo by NFL Photos/Getty Images)

SAN DIEGO, CA - NOVEMBER 5: Wide receiver Bob Hayes #22 of the Dallas Cowboys watches from the sideline against the San Diego Chargers at San Diego Stadium on November 5, 1972 in San Diego, California. The Cowboys defeated the Chargers 34-28. (Photo by James Flores/NFL Photos/Getty Images)

Washington Redskins cornerback Mike Bass leaps in front of Cowboys wide receiver Bob Hayes to make an interception during the Redskins 28-21 victory over the Dallas Cowboys on November 17, 1974 at RFK Stadium in Washington, D.C. (Photo by Nate Fine/NFL)