Complex sentence: Archibald tore his achilles tendon and never played a regular-season game for the Braves, who traded him to the Boston Celtics as part of a 7-player deal before the start of the next season.
Split into simpler sentences: Archibald tore his achilles tendon and never played a regular-season game for the Braves. Buffalo traded him to the Boston Celtics as part of a 7-player deal before the start of the next season.