Mike Holmgren trained many of his assistants to become head coaches, including Jon Gruden and Andy Reid. Gruden won a Super Bowl with the Tampa Bay Buccaneers. Reid served as head coach of the Philadelphia Eagles from 1999–2012, and guided the Eagles to multiple winning seasons and numerous playoff appearances. Ever since 2013, Reid has served as head coach of the Kansas City Chiefs. He was finally able to win a Super Bowl, when his Chiefs defeated the San Francisco 49ers in Super Bowl LIV. In addition to this, Marc Trestman, former head coach of the Chicago Bears, served as Offensive Coordinator under Seifert in the 90's. Gruden himself would train Mike Tomlin, who led the Pittsburgh Steelers to their sixth Super Bowl championship, and Jim Harbaugh, whose 49ers would face his brother, John Harbaugh, whom Reid himself trained, and the Baltimore Ravens at Super Bowl XLVII, which marked the Ravens' second World Championship.