Super Bowl XXX served as the final Super Bowl victory for the Cowboys' dynasty of the 1990s. Dallas would win only one more postseason game until 2009. Injuries forced Michael Irvin and fullback Daryl Johnston to retire after the 1999 season, and Aikman also retired due to injuries one year later. Smith became the NFL's all-time leading rusher in 2002 before he was released by the team after that season. 1995 was statistically the best season for the Cowboys' triplets, although all three have stated that the 1995 Super Bowl was easily the toughest of the three Super Bowl runs. The Cowboys also became the first team to win Super Bowls under three head coaches (Tom Landry in Super Bowls VI and XII, Jimmy Johnson in Super Bowls XXVII and XXVIII, and Switzer). Two other teams have since won Super Bowl championships under three coaches, with the Green Bay Packers winning under Vince Lombardi, Mike Holmgren, and Mike McCarthy, and the Pittsburgh Steelers winning under Chuck Noll, Cowher, and Mike Tomlin.