Under Ford's leadership, the Celtics improved to 56–26 in 1990–91, recapturing the Atlantic Division title even though Bird missed 22 games with several injuries. The Celtics again lost to the Pistons in the playoffs. In 1992, a late-season rally allowed a 51–31 Celtics team to catch the New York Knicks and repeat as Atlantic Division champions. After sweeping the Indiana Pacers in the first round, the Celtics lost a seven-game Eastern Conference Semifinals series to the Cleveland Cavaliers. Back injuries limited Bird to only 45 regular-season games, and just four of ten in the playoffs. After thirteen NBA seasons and a gold medal at the Barcelona Olympics with the Dream Team, continued back trouble led Bird to retire in 1992.