The Authoritative Date Is August 4, 1978
Boston, San Diego and the league transaction ledgers all record this transaction on August 4, 1978. The legacy route is frozen under a July 7 date, so this review does not rewrite its archival identifier. It records August 4 as the source-verified transaction date. The package itself is consistent across the authoritative ledgers. Boston sent Kevin Kunnert, Kermit Washington, Sidney Wicks and Freeman Williams to San Diego. The Celtics received Tiny Archibald, Marvin Barnes, Billy Knight, a 1981 second-round pick that became Danny Ainge and a 1983 second-round pick that later became Rod Foster. The legacy description of Wicks as a later future consideration is not supported by the Basketball-Reference team or league ledgers; they include him directly in the August 4 package.
Archibald Became a Championship Point Guard
Archibald's Boston tenure transformed the trade. He played 69 games in 1978-79, then 80 in both 1979-80 and 1980-81, 68 in 1981-82 and 66 in 1982-83. That is 363 regular-season games. He made the All-Star team in 1980, 1981 and 1982, earned All-NBA Second Team honors in 1980-81 and was the starting point guard on Boston's 1981 championship team. The Celtics received five years of high-end guard play from a player who had missed the entire previous season with an Achilles injury.
The Ainge Pick Became Another Championship Core Piece
Boston kept the 1981 second-round pick and selected Ainge at No. 31. He played 556 regular-season games for the Celtics from 1981-82 through part of 1988-89. Ainge was on the 1984 and 1986 championship teams and made the 1988 All-Star team. That outcome alone would make the draft portion of the deal unusually strong for a second-round asset.
Knight and the 1983 Pick Later Converged in the Dennis Johnson Trade
Knight played 40 games for Boston before the Celtics traded him to Indiana for Rick Robey on January 16, 1979. Robey then played 339 regular-season games for Boston and was part of the 1981 championship team. On June 27, 1983, Boston sent Robey, the 1983 second-round pick from this trade and another 1983 second-rounder to Phoenix for Dennis Johnson, a 1983 first-round pick and a third-round pick. Phoenix used the incoming No. 28 selection on Rod Foster. That branch requires careful attribution. Both Robey and the Foster pick trace back to the 1978 transaction, but another second-round pick was also outgoing, and Phoenix sent multiple assets back. This review credits the branch as a major shared downstream return without assigning all of Johnson's later Celtics value to either Knight or the Foster pick individually.
Barnes Was the Short Boston Branch
Barnes played 38 games for Boston in 1978-79, averaging 8.1 points and 4.7 rebounds. The Celtics waived him in February 1979. His limited tenure does not materially drive the grade.
San Diego Received a Strong Four-Player Return
The Clippers' side was much better than the legacy C+ grade suggested. Washington played all 82 games in 1978-79 and averaged 11.3 points and 9.8 rebounds. Kunnert played 81 games and averaged 6.5 points and 7.0 rebounds. Freeman Williams became the best long-term San Diego scorer from the package. He played 273 games across four Clippers seasons and scored 4,467 points, including 18.6 points per game in 1979-80 and 19.3 in 1980-81. Wicks added 199 games across three seasons. Washington and Kunnert also retained transaction value. In May 1979 San Diego sent both players plus a 1980 first-round pick to Portland as veteran-free-agent compensation after signing Bill Walton. That later return required an additional first-rounder, so this review does not assign Walton solely to the two players.
Final Verdict
Celtics Win, A+/A-. Boston receives an A+ because Archibald became a five-year championship point guard, Ainge became an eight-season Celtics contributor and two-time champion, and the Knight/Foster branches later helped form the package for Dennis Johnson. San Diego receives an A- because Williams, Wicks, Washington and Kunnert combined for substantial real playing value and two of those assets retained later transaction utility. This was not a one-sided talent giveaway; Boston simply converted its side into multiple championship-era pillars. Confidence is high.