WASHINGTON — Russell Westbrook  became the only player with multiple 20-assist, 20-rebound games in NBA history — Wilt Chamberlain is the only other player with one — and the surging Washington Wizards moved closer to Indiana in the Eastern Conference playoff standings by beating the Pacers 154-141 on Monday night.  Westbrook had 14 points to go along with his career-high 21 rebounds and career-high-tying 24 assists for his league-leading 32nd triple-double of the season. He has 178 triple-doubles, three short of Oscar Robertson’s career record, with seven games remaining this season for Washington.  Monday’s performance guarantees that Westbrook will average a triple-double in a season for the fourth time in his career; Robertson is the only other player to do this, and he did it once, in 1961-62.