The Cleveland Cavaliers have completed a four-game sweep of their first-round playoff series against the Washington Wizards in the National Basketball Association.

The Cavaliers beat the Wizards 97-90 in Washington Monday, advancing to the Eastern Conference semi-finals against either Toronto or New Jersey.

LeBron James had 31 points for Cleveland, while Zydrunas Ilgauskas finished with 20, including four straight points that pulled the Cavaliers ahead late in the fourth quarter.

In other playoff action, the San Antonio Spurs took a 3-1 lead in their Western Conference first-round series against the Denver Nuggets. The Spurs' Robert Horry hit a clutch three-pointer with 30 seconds left that sealed a 96-89 win over the Nuggets in Denver.

In Houston, the Rockets' Yao Ming sank two free throws with 11 seconds left that clinched a 96-92 victory over the Utah Jazz. The win gives Houston a 3-2 lead in their first-round series against the Jazz.