1971 behind quarterback Bob Griese and wide receiver Paul Warfield. The AFC Divisional Playoff Game, in which the Dolphins defeated the Kansas City Chiefs 27–24, was the longest contest in NFL history (82 minutes 40 seconds). The Dolphins then shut out the Colts 21–0 in the AFC Championship game at the Orange Bowl. In Super Bowl VI, however, Miami lost to the Dallas Cowboys 24–3. In 1972, the Dolphins completed the NFL's first and only perfect season, winning every regular season game, two playoff games, and Super Bowl VII, defeating the Washington Redskins 14–7 (the 1948 Cleveland Browns had accomplished an undefeated season, but as members of the All-America Football Conference). During this season, Griese suffered a broken ankle in Week 5 versus the San Diego Chargers and was replaced by veteran Earl Morrall for the rest of the regular season, with Griese returning to the field as a substitute during the AFC Championship game versus the Pittsburgh Steelers and would once again start for Miami in Super Bowl VII. On the ground, running backs Larry Csonka and Mercury Morris became the first teammates to each rush 1,000 yards in a season. The offensive line included future Hall of Fame members Jim Langer and Larry Little, and Pro Bowler Bob Kuechenberg. The 1972 Dolphins defensive unit, called the No-Name Defense because Miami's impressive offense received much more publicity, was the league's best that year. It was led by linebacker Nick Buoniconti, end Bill Stanfill, and safeties Dick Anderson and Jake Scott. The Dolphins defeated the Cleveland Browns 20–14 at the Orange Bowl, then knocked off the Steelers 21–17 at Three Rivers Stadium to advance to Super Bowl VII. The only blemish in Miami's Super Bowl victory over Washington came from their placekicker, Garo Yepremian. Late in the 4th quarter, with the Dolphins leading 14–0, Yepremian attempted a 42-yard field goal, which was blocked. Yepremian picked up the loose ball, and attempted to pass, but the ball slipped out of his hands, and after batting it up in the air, the ball was grabbed by Redskins cornerback Mike Bass, who returned it for a touchdown. The Dolphins were able to hold on for a 14–7 victory. The Dolphins finished 12–2 after the 1973 regular season and repeated as NFL champions, beating the Minnesota Vikings 24–7 in Super Bowl VIII at Rice Stadium in Houston. Miami reached the playoffs again in 1974