The university's football program lagged behind, before acquiescing in 1970. The situation at UT motivated Smith to become a much better player at Michigan State University, where he was an All-American in both 1965 and 1966. He was a popular athlete at Michigan State, earning the arresting fan chant of "Kill, Bubba, Kill." His final game at Michigan State was a 10–10 tie with Notre Dame at Spartan Stadium on November 19, 1966. With both teams undefeated, untied and ranked atop the national polls going in (The Fighting Irish were ranked #1 at 8–0–0, the Spartans #2 at 9–0–0), the match-up was hyped as the college "Game of the Century". Early in the first quarter, Smith tackled Notre Dame starting quarterback Terry Hanratty, who sustained a separated left shoulder. Hanratty was replaced for the remainder of the game by Coley O'Brien. Smith, who admitted that Hanratty's injury actually backfired on the Spartans, stated, "That didn't help us any. It just let them put in that O'Brien who's slippery and faster and gave us more trouble. The other guy just sits there and waits, and that's what we wanted." Michigan State finished second behind Notre Dame in the final voting for the national championship. In 1988, Smith was enshrined in the College Football Hall of Fame. Michigan State retired his number 95 jersey on September 23, 2006, prior to the Spartans' home game against Notre Dame, amid repeated cheers of his old slogan from the student section. This game also celebrated the 40th anniversary of the "Game of the Century." Professional Smith was the No. 1 overall pick in the 1967 NFL draft, taken by the Baltimore Colts with a selection originally held by the expansion New Orleans Saints, which had been traded for quarterback Gary Cuozzo. Smith's Michigan State teammate, running back Clint Jones, followed him as the second pick. , Smith is the only Michigan State player to be taken first overall. Smith spent nine seasons in the NFL as a defensive end and played in the Super Bowl twice in his first five seasons. The heavily-favored Colts lost Super Bowl III to the New York Jets and won Super Bowl V two years later following the 1970 season. It was Smith's only Super Bowl ring. However, in interviews, Smith stated that he would never wear the ring, out of a sense of disappointment that he and his teammates