During the 1981 NBA Playoffs, Lacey was the team leader and played a key role in the 40-42 five seed Kings making to the Western Conference Finals before being eliminated by Moses Malone and the Houston Rockets, averaging 10 points, 8 rebounds, 5.3 assists, and 1.9 steals, for a Kansas City team missing starting guards Phil Ford and Otis Birdsong due to injuries for most of the playoffs. During the following season, Lacey was traded to the Nets for Mike Woodson and a future first round draft pick.
