Complex sentence: They finished 54-28, three games behind the Phoenix Suns in the Pacific Division, then were upset by the 40--42 Houston Rockets 2 games to 1 in the first round of the playoffs in a series that saw the road team win every game.
Split into simpler sentences: They finished 54-28,3 games behind the Phoenix Suns in the Pacific Division. They were upset by the 40--42 Houston Rockets 2 games to 1 in the first round of the playoffs in a series that saw the road team win every game.