Boston acquired Quinn Buckner from Milwaukee on September 9, 1982 for the rights to retired Celtics legend Dave Cowens. Buckner played 226 regular-season games for Boston over three seasons, started 62 and appeared in 45 playoff games, including all 23 during the Celtics' 1984 championship run. Cowens came out of retirement for Milwaukee and played 40 regular-season games, starting 34 while averaging 8.1 points and 6.9 rebounds, then retired again after the season. Milwaukee received one useful veteran year, but Boston received three seasons of guard depth plus a championship contribution, giving the Celtics the stronger realized return.
Basketball-Reference's Milwaukee transaction ledger records the September 9, 1982 exchange directly: the Bucks sent Quinn Buckner to Boston for Dave Cowens, who had been retired since 1980. Buckner immediately became a major rotation guard for a title contender, while Cowens gave Milwaukee one final NBA season.
Buckner appeared in 72 games for the Celtics in 1982-83 and started 56. He averaged 7.9 points, 3.8 assists and 1.5 steals while playing 21.7 minutes per game. He returned for 79 games in 1983-84 and all 75 games he was available for in 1984-85. Across three Boston seasons, Buckner played 226 regular-season games and started 62. His role declined over time, but his availability and defensive backcourt depth gave Boston repeated value well beyond the first season.
Buckner appeared in 23 playoff games during Boston's 1984 title run. He averaged 11.7 minutes in the postseason and served as a reserve behind the Celtics' established starting backcourt. That championship contribution is not treated as if Buckner were one of the team's primary stars. It still matters because Boston received a dependable playoff rotation player from the trade.
Cowens had not played in either 1980-81 or 1981-82. Milwaukee acquired his rights and convinced him to return for the 1982-83 season. He played 40 regular-season games, started 34 and averaged 25.4 minutes, 8.1 points, 6.9 rebounds and 2.1 assists. The Bucks won 51 games and reached the Eastern Conference Finals. Cowens therefore was not an empty return. Milwaukee received legitimate frontcourt minutes from a Hall of Fame veteran during a strong season.
Cowens retired again after 1982-83, ending Milwaukee's return after 40 regular-season games. Buckner stayed in Boston through 1984-85 and played 226 regular-season games plus 45 playoff games across those three seasons. The Celtics did not acquire a star, but they received far more durable value and a contributor to a championship team.
Celtics Win, A/C+. Boston receives an A for three seasons, 226 regular-season games, 62 starts and meaningful playoff depth during the 1984 championship run. Milwaukee receives a C+ because Cowens supplied one credible comeback season on a 51-win team, but the return lasted only 40 games before he retired again.