Kellen Winslow Jr.’s use of a motorcycle might have violated standard NFL contract language that prohibits players from engaging in dangerous activities.

The Cleveland Browns could require Winslow, who lost millions last year because of a season-ending injury, to pay back a $4.4 million signing bonus he received in March.

The 21-year-old tight end sustained internal injuries and damage to his right shoulder and right knee in an accident that sent him flying over the handlebars of his newly purchased motorcycle.

Winslow was being treated at the Cleveland Clinic, where the team’s medical staff was waiting for swelling in the shoulder and knee to subside. The team declined Tuesday to provide an update on his condition.

NFL spokesman Greg Aiello said the standard NFL contract forbids players from taking part in any activity “which may involve a significant risk of personal injury.”

It’s another setback for the struggling Browns and Winslow, who entered the league last season with high expectations and a reputation as a hothead. His rookie season ended in disappointment when he broke his right leg during an onside kick in a Week 2 loss against Dallas.

With his leg still on the mend, Winslow purchased a sport bike last month and was learning how to ride it in a parking lot Sunday night when he hit a curb and was thrown off. He complained of chest pains after the crash.

Winslow held out last year before signing a $40 million contract _ a record for a tight end _ as the No. 6 pick in the draft.

Teams have the option of making contract language regarding dangerous activities more or less restrictive during negotiations with players, Aiello said. The Browns wouldn’t release information about Winslow’s contract.

The New Jersey Nets controlled Shaquille O’Neal and Dwyane Wade better than they ever could have imagined and still were hammered by the Miami Heat.

O’Neal and Wade combined for just 31 points, but former Net Alonzo Mourning came off the bench to score 21 and grab nine rebounds in 16 minutes as Miami rolled to a 102-85 triumph over New Jersey and a 2-0 advantage in their Eastern Conference first-round series.

Wade scored 32 points and O’Neal added 17 and 11 rebounds in Miami’s easy 116-98 triumph in Game 1 of the best-of-seven series on Sunday. In this one, the Nets all but shut down Miami’s two All-Stars, holding them to a total of just 16 points through three quarters.

With Wade and O’Neal struggling – and Game One star Damon Jones relatively held in check – Miami figured to be in trouble, but that was far from the case. The Heat opened the contest with the game’s first seven points and scored the final eight of the first quarter to seize a 26-16 lead after 12 minutes.

When the Nets got within 32-30 midway through the second quarter, Mourning had the final four points in a 14-4 burst that all but sealed the game. Mourning, showing a lot of emotion on both ends of the floor and against the team he began the season with, capped that pivotal spurt with a three-point play over New Jersey center Nenad Krstic.

Mourning also had the final eight points in a 19-8 third-quarter run that opened a 72-52 lead with 2:34 left in the period. He made 6-of-8 shots and 9-of-12 free throws in the contest before fouling out in the waning moments.

“My game is not a surprise to me, I feel like I’m a Hall of Fame player,” Mourning said. “Nothing I do now surprises me. I didn’t forget how to play the game. … The front office has assembled this team for one reason – to win a championship. We want to kill the thought of this being a one- or two-man team. … We know what we’re capable of doing. I know what I’m capable of doing.”

“Zo was unbelievable tonight,” Miami coach Stan Van Gundy said. “He had 21 points and nine rebounds in 16 minutes. That is one of the most productive lines that you will ever see. He was absolutely great.”

The 13-year veteran had just six points in 14 minutes in Game One and averaged only 7.6 points in 37 games during the regular season. But with O’Neal enduring one of the worst postseason games of his career, Mourning took over, posting his highest point total this season.

“It’s good to be on a good team,” said O’Neal, who reportedly had a “secret team meeting” prior to the game to show his teammates his three championship rings. “Guys are definitely carrying me now. I’m sore, but I’m not going to use that as an excuse. The first timeout, Zo grabbed me and said, ‘Big fella, you look kind of slow, you look kind of weak. I’ve got your back, I’m going to step it up.'”

“Alonzo did a great job. There must be something in the air down here or in the water because he does not get tired,” Nets forward Brian Scalabrine said. “He can all of a sudden grab offensive rebounds and dunk on people.”

O’Neal had 14 points and 10 rebounds in 27 minutes, admitting after the game he felt “slowed.” Wade had 17 points and 10 assists for Miami, which has won 21 of its last 22 games at AmericanAirlines Arena.

Vince Carter led New Jersey with 21 points, Richard Jefferson chipped in 14 and Jason Kidd 10, but the trio combined to shoot just 15-of-40. The Nets made just 28-of-78 shots overall.

“We did a good job of containing Wade and some of their perimeter shooters, but they are a balanced team,” Jefferson said. “When you take one thing away, they will get you in another spot.”

“Obviously, Alonzo was a game-changer,” Nets coach Lawrence Franksaid. “Alonzo was really dominant in the paint. We probably gave him too many layups in and around the paint.”

The series shifts to New Jersey for Game 3 on Thursday.

Few teams in college football have ever had a running back tandem with the ability and production that Auburn received from Brown and Carnell Williams. Brown, blessed with the size of a fullback and the speed of a sprinter, is an excellent receiver in addition to his skills as a power runner. Brown, a Communications major, spent last spring interning at the Auburn Network, where he edited and produced highlight films. Based on his stellar performances as a Tiger the last four years, his own highlight tape might be longer than “Gone With the Wind.”

Brown gained 1,931 yards on 206 carries (9.4 avg.) and scored 25 touchdowns and caught 15 passes for 343 yards (22.9 avg.) and three scores as a senior at Cartersville High School. He also competed as a free safety and intercepted three passes, earning Georgia Class 2A Player of the Year. He scored three touchdowns and rushed for 180 yards on 20 carries in a 27-21 win in the state championship game that year. The three-year starter rushed for 936 yards and 12 touchdowns as a junior.

Draft Order as of today.

1 San Francisco

2 Miami

3 Cleveland

4 Chicago

5 Tampa Bay

6 Tennessee

7 Minnesota (from Oakland)

8 Arizona

9 Washington

10 Detroit

11 Dallas

12 San Diego (from N.Y. Giants)

13 Houston

14 Carolina

15 Kansas City

Finally, after months of previews, the lights have dimmed and the curtains have opened on the NFL draft’s trade market. While two-plus days remain for deals to rise and fall, at least one mega trade has appeared on the horizon.

A league source said Wednesday that the Miami Dolphins, who have avidly pursued trading down from the No. 2 overall pick, are on the verge of trading that choice to the Minnesota Vikings for the seventh and 18th picks, as well as another mid-round choice. Several signs point to the deal coming to fruition in the next few days.

“Imminent is a little strong, but I think it has momentum,” the source said.

It now appears Miami has been targeting Utah quarterback Alex Smith with the No. 2 pick � which was precisely what one NFC coach insisted at the March owners’ meetings. But with Smith in negotiations with the San Francisco 49ers, Miami may be forced to go with Plan B with the second selection.

Contrary to popular belief, it now appears that Auburn running back Ronnie Brown is not being targeted by the Dolphins. In reality, communication between Miami and Brown has been a bare minimum over the last month, an odd occurrence for someone expected to be head coach Nick Saban’s first-ever draft choice.

That, combined with the possibility that San Francisco will be taking Smith with the No. 1 pick, has opened the door for the Minnesota Vikings, who are attempting to move to the top of the draft to select Michigan wide receiver Braylon Edwards. The Vikings have placed “exploratory” calls to both San Francisco and Miami to find out the price tag for obtaining their picks.

Opinions across the league are splintered about the value of trading up in the draft, and the Vikings would be paying a handsome price by surrendering two first-round picks to grab Edwards. However, he’s widely considered the best player in the draft and would go a long way toward filling the void left by Randy Moss.

As most expected, teams have begun to loosen their ties and hunker down just a few days before the draft begins on Saturday. While most of the major trades won’t begin to occur until Saturday morning, word is slowly leaking out of what’s in the works.

Among the other trades that are expected to pick up steam in the next 48 hours:

Miami cornerback Patrick Surtain for the Kansas City Chiefs’ second-round pick.