Shaquille O'Neal spent his final day of free time where any super hero would hang out.

He went to Disney World.

Now Superman is preparing for his Cleveland Cavaliers debut against the Boston Celtics tonight in one of the league's most heated rivalries. The two teams that open the season in the East could also be the final two teams remaining in the conference finals — though defending Eastern Conference champion Orlando may differ with that prediction.

"You can't win the championship winning the first game. You still have to play all 82 and go through the postseason," O'Neal said. "But you always want to try and get off to a great start."

With a day off on Sunday, O'Neal took his family to Disney for one final day of fun. From now until the playoffs, his quest is to win the Cavaliers' first championship in history.

Cleveland traded for O'Neal for games like this against Kevin Garnett and the Celtics, who eliminated the Cavs in the playoffs two years ago on their way to their first NBA championship in 12 seasons.

That heated series launched a feud that boiled all last season. It bubbled up in last week's preseason game in Columbus, when the Cavs' Mo Williams was spun to the ground in the first half. He got up and threw an elbow into the chest of Boston's Shelden Williams, who shoved back before order was quickly restored.

LeBron James said a rivalry needs a little trash talking and two good teams to beat up on each other. The Cavaliers and Celtics meet that standard.

"I think we have that history with Boston," James said yesterday. "We had a great postseason with them and we've had some great regular-season games with them. So I guess this is our new rival."

Boston won last week's preseason game by 14 despite resting Garnett and Ray Allen. Winning in Ohio, even during the preseason, is good news for the Celtics. Including the postseason, the home team has won the last 16 meetings in this series — Cleveland has won its last eight games against Boston at Quicken Loans Arena.

Cleveland's Leon Powe is witnessing the rivalry from both sides. He spent his first three seasons in Boston, winning a ring in 2008. He signed with the Cavaliers during the summer, but won't play in today's game. Powe is rehabbing from a torn ACL suffered during the playoffs and is expected back around the All-Star break.

Powe knows the Celtics aren't big fans of the Cavaliers.

"Honestly, they don't like them," he said. "They want to beat them every time. And I know our mentality over here is the same. Every time we play against the Celtics, we want to beat them and make a statement. What better way to do it than on opening night?"

ELSEWHERE

More Cavaliers: The wife of Cleveland guard Delonte West has filed a domestic violence report against her husband.

The report, filed with Cleveland police on Sunday, says that Kimberly West met with authorities at Cleveland Hopkins International Airport, where she had gone to fly to her father's house in New Jersey.

In the report, she says that Delonte West had accused her of cheating on him and that they had an argument in which he grabbed her and took her wedding ring and purse.

Bulls: Chicago has exercised contract options on point guard Derrick Rose and forward Joakim Noah for the 2010-11 season.

The reigning Rookie of the Year and a Chicago native, Rose averaged 16.8 points and 6.3 assists last season while leading the Bulls to the playoffs.

Noah, the ninth pick in the 2007 draft, has averaged 6.7 points and 6.6 rebounds over two seasons.

Blazers: Portland forward Nicolas Batum will undergo surgery on his right shoulder to repair torn cartilage.

Batum averaged 5.4 points and 2.8 rebounds while earning praise for his defense.