Chelios played for the Montreal Canadiens, Chicago Blackhawks, Detroit Red Wings, and the Atlanta Thrashers. When he was called up from the AHL's Chicago Wolves to play for the Thrashers during the 2009–10 NHL season, Chelios was the oldest active player in the NHL and the second oldest of all time, had played the most games of any active player in the NHL, was the last player from the 1981 NHL Entry Draft still active (or any draft from 1986 and earlier), and had the most career penalty minutes of any active player. Chelios currently holds the record for most games played in the NHL by a defenseman, is seventh overall with 1,651 games played, holds the record for most career playoff games played with 266 and is tied with Gordie Howe for most NHL seasons played with 26. On May 1, 2009, he appeared in the playoffs for an NHL record 24th time, having missed the playoffs only once (1997–98). Chelios is also the record-holder for most career postseason losses, with 117 (also the most in any professional sport in North America). However, he only lost one Game 7 in his entire career, a 3-2 OT loss in the 1985 Adams Division Finals against the Nordiques. In 2017, Chelios was named one of the '100 Greatest NHL Players' in history.