REVIEW OF RULES CHANGES

You can swipe at a quarterback's legs while he's in the pocket, but don't lunge at them. No more wedges on kickoff returns. And, no do-overs on messed up onside kicks.

But instant replay can correct errors in two more calls made on the field. While such rules changes were decided and announced in the spring, Friday is when the Dolphins players and the media saw the yearly NFL officials' presentation on changes in rules and emphasis. This year, several changes had roots in plays significant to the overall course of the 2008 season.

It's not called The Tom Brady Rule, but the hit by Kansas City safety Bernard Pollard that took out the New England quarterback's left knee in the 2008 season opener is now illegal. The league stated it was legal last season. But the video shown to players and the media used that hit as an example of what will be penalized this season.

On the play, Pollard had been blocked to the ground and escaped the block with a lunge that crashed into Brady's left knee.

``A defender cannot initiate a roll or a lunge and forcibly hit the passer in the knee area or below even if he's being contacted by another player,'' the video said. ``It is the defender's responsibility to avoid these types of dangerous hits. It is legal for a defender to swipe, wrap or grab the passer in the knee area or below in an attempt to tackle.''

Dolphins defensive end Kendall Langford, after initially laughing that he didn't want to comment, said he felt that it takes some of a pass rusher's aggression away from him. On kickoffs and free kicks, wedges of three or more players won't be allowed. If three players on the return team are shoulder-to-shoulder within two yards of each other, it'll be a 15-yard penalty. Dolphins coach Tony Sparano thinks it might force coaches to pick kickoff returners the way they do punt returners, with elusiveness increasing in value and raw speed decreasing.

``The one thing I do know, it just creates more space,'' Sparano said.

The Jay Cutler fumble that was ruled an incomplete pass in Denver's Week 2 win over San Diego and a live punt muff that was ruled to be out of bounds in the NFC Championship Game prompted the replay change. In each case, the erroneous call on the field couldn't be challenged or overturned by replay.

This season, replay could overturn the original call and, if there's an obvious recovery by the opposing team, the recovering team would be awarded the ball at that spot. It's the same change made two years ago on plays during which a runner erroneously was called down by contact before fumbling the ball away to the other team. Also, onside kicks on which there's a penalty on the kicking team won't prompt an automatic re-kick.

SATURDAY SCRIMMAGE

Saturday's second practice, at 2 p.m., will feature a scrimmage of 90 to 110 plays. It'll be a full-pads session without tackling.

``We will move a few move a few bodies around, but more importantly, get a little continuity and try to create some game atmosphere,'' Sparano said. REVAMPED FIGHT SONG

Rapper T-Pain modernized the Dolphins fight song and introduced it Friday night at Casa Casuarina. Both versions, classic and 2009 remix, will be played at Dolphins home games.

-- DAVID J. NEAL