The following season was Chandler's best, when he led the NFL with 1,032 receiving yards and nine receiving touchdowns in the strike-shortened season; his average of 129 yards receiving per game that year is still an NFL record. He also caught nine passes for 124 yards in a playoff win over the Pittsburgh Steelers. Chandler represented Chargers players in the players' union, and many NFL players in that role were cut or traded after the 1987 NFL strike. After he was elected to the union's executive committee, Chandler was traded to the San Francisco 49ers, with whom he finished his career in 1988. He played in four games before retiring in October after tendinitis in a knee and frustration over his performance. The 49ers went on to win the Super Bowl that season. "My heart wasn't in it. It had nothing to do with being a quitter. It was more about real-life decisions," he said.