Though Smith played 16 years in the league and is now enshrined in the Pro Football Hall of Fame, he is perhaps best known for this dropped touchdown, particularly in a championship game that was ultimately decided by four points. Fourth quarter Two controversial penalties early in the fourth quarter paved the way for the Steelers to score 14 unanswered points. The Steelers advanced to their own 44-yard line after a crucial 3rd down pass from Bradshaw to tight end Randy Grossman, a 13-yard pass to Swann, and a 5-yard run by Harris. Bradshaw then attempted a pass to Swann, but the receiver collided with Cowboys defensive back Benny Barnes and fell to the ground as the ball rolled incomplete. However, official Fred Swearingen (the referee of the Immaculate Reception game of 1972) called Barnes for pass interference. Replays showed that it could have been incidental contact, as Swann seemed to run into Barnes. The penalty gave Pittsburgh a first down at Dallas' 23-yard line. Two plays later, the Steelers faced 3rd down and 4 from the Dallas 17. Henderson sacked Bradshaw for a 12-yard loss, but the play was nullified by a delay of game penalty on Pittsburgh, bringing up 3rd down and 9 instead of a fourth down. Replays clearly showed the whistle blew before the play's onset, plus most of the players pulled up and stopped playing after a whistle sounded, but Henderson claimed, "I didn't hear a whistle until after I had knocked Bradshaw down. The same guy (Swearingen) made that call too. Who is that guy?" Franco Harris confronted Henderson for taunting Bradshaw after the whistle, and on the next play, Bradshaw handed the ball off to Harris, who raced untouched, with help from the Umpire Art Demmas impeding Cowboys safety Charlie Waters' attempt to tackle him, up the middle for a 22-yard touchdown run. The next day Waters was quoted as saying, "I don't know what I could do – maybe knock him [Umpire Demmas] flat and maybe he'd knock Franco flat? Our safeties play a vital role in the run. That official gets in the way a lot. He screened me off." This score increased Pittsburgh's lead to 28–17. The run would be the Steelers' longest touchdown run in Super Bowl competition until Willie Parker scampered 75 yards for a score against the Seattle Seahawks in Super Bowl XL. On the ensuing kickoff,