 Hayes' first two seasons were most successful, during which he led the NFL both times in receiving touchdowns with 12 and 13 touchdowns, respectively.In 1966 Hayes caught six passes for 195 yards against the New York Giants at the Cotton Bowl.Later, in the Dallas Cowboys-Washington Redskins match-up, Hayes caught nine passes for 246 yards (a franchise record until Miles Austin broke it with a 250-yard performance on October 11, 2009, against the Kansas City Chiefs).