CLEMSON, S.C. -- Clemsons rebuilt, young defense has passed its earliest tests to keep the fifth-ranked Tigers undefeated. Now, they face perhaps the biggest challenge of the season in slowing the remarkable roll of No. 3 Louisville and quarterback Lamar Jackson.You can do everything right and still be wrong when it comes to Jackson, Clemson defensive coordinator Brent Venables said.Louisvilles opponents understand what Venables means. The third-ranked Cardinals (4-0, 2-0 Atlantic Coast Conference), who face No. 5 Clemson (4-0, 1-0) on Saturday night, lead the Football Bowl Subdivision with 63.5 points a game. Jackson has accounted for 25 touchdowns, 12 of them running.Jackson is the Heisman Trophy front-runner through the first third of the season.We know how much of a playmaker and how he is an elite talent, Clemson linebacker Ben Boulware said. But we are up for the task.That was a huge question coming into the season as the Tigers faced life without seven defensive starters from last years ACC champions, six who were chosen in last springs NFL draft. So far, so good. The Tigers have allowed just 218 yards a game, the countrys third best total.Christian Wilkins and Clelin Ferrell have filled in at defensive end for NFL draft picks Shaq Lawson and Kevin Dodd, who finished 1-2 nationally in tackles for loss last year.Freshman Dexter Lawrence, a January enrollee, moved into the starting lineup in week two and has plugged up the middle at nose tackle.Boulware said Clemsons defense has to keep Jackson in the pocket and not let him make plays on the move. Its very important for our (defensive) line to get pressure and win their matchups, he said.Jackson has been adept at seeing the defensive plan and figuring out a way to beat the opposition on the ground or in the air. He has thrown for 1,330 yards and 13 TDs this season and rushed for 526 yards. Jackson is the first FBS quarterback in 10 years to have two games in a season where hes accounted for seven touchdowns .Its really kind of freaky when you look at the numbers that they put up, Clemson coach Dabo Swinney said. It would be hard to put up these numbers in a video game.Venables hasnt spent much time on his X-Box lately, but is among the best in the country at attacking and limiting an opponents strength. Last week in 26-7 victory at Georgia Tech , the Tigers held the Yellow Jackets relentless, triple-option attack to 124 yards total.Coach V is a football guru, Boulware said of Venables. He knows the ins and outs of that type of offense. So it starts with him and ends with us.For Jackson, things typically end in the end zone -- which Louisville knows it will need at sold-out, ultra-loud Death Valley.Its really important to get off to a good start because playing away at a place like Death Valley, its good to steal the momentum early so you get the crowd out of it early and just play the game instead of focusing on the crowd, Cardinals receiver Jaylen Smith said.The crowd may have rattled the Cardinals in their only other trip to Clemson two years ago. Louisville had a first-and-goal at the 8 in the final minute, yet inexplicably spiked the ball on third down and was forced into a fourth down pass that was knocked down by Clemson defensive tackle DeShawn Williams in a 23-17 victory.Louisville coach Bobby Petrino understands the Tigers will be active and physical up front once again.Probably be the biggest defensive line that weve played this year, he said.Jacksons play this season has overshadowed the solid showing of Clemson quarterback Deshaun Watson, the defacto Heisman favorite entering the season. Boulware believes facing Watsons skillset in practice gives the Tigers an edge in shutting down Jackson.They are very similar and pretty much identical, Boulware says. So getting to go up against Deshaun all throughout fall camp the past three years is pretty good preparation for Lamar Jackson.Air Force 1 Dam Rea . -- Charline Labonte couldnt have asked for a better homecoming. Nike Air Force 1 Low Rea . Radwanska, making her debut in the Seoul tournament, hit eight aces in a match that lasted 1 hour, 4 minutes at Olympic Park tennis stadium. "It was definitely a very good match -- I was playing really good tennis," Radwanska said. http://www.airforceonesverige.com/nike-air-huarache-sverige.html . How great will be revealed in the next couple of days at the board of governors meeting in Pebble Beach, Calif. Nike Air Huarache Dam Rea . Thats about all he can do right now, so hes trying not to think about when he might be able to play again for the Los Angeles Lakers. Air Force One Sverige . -- Bobby Ryan helped the U.Fresh from success on the international stage, leading apprentice Dylan Dunn has brought his winning form home to Melbourne.Last seasons champion junior rider in Melbourne, Dunn won the Sheikha Fatima Bint Mubarak Apprentice World Championship Final in Abu Dhabi on Sunday.He returned to Melbourne racing on Wednesday to steer the Colin Little-trained Domino Vitale to victory in the M & D Dillon Contructions Handicap (1600m).Domino Vitale ($26) scored by 1-1/4 lengths over Sweet Melody with Maternal a neck away third.What a great experience to do that (in Abu Dhabi) and then come back here and kick off with a winner when Ive just got down to my 1-1/2 kilo claim, Dunn said.Wednesday was the first day the 21-year-old rode with his reduced claim.Dunn said winning in Abu Dhabi was a great experience.It was one of those things you dream about, he said.To get to represent your country is one thing, but to actually come out a champion is another. I learned so much and met a lot of good connections and I think that can only improve my riding.Even coming back here today in that race, I tried not to panic wwhen I was caught deep.dddddddddddd.Dunn wasnt the only apprentice in the winners circle at Sandown with Ben Allen riding a double while Jye McNeil and Ben Thompson each rode a winner.Allens double came aboard Darren Weir-trained runners Big Hammer and Royal Ace and took his season tally to 12 city wins in Melbourne to be fifth in the jockeys premiership.Its good when you get good support from Darren Weir, Allen said.When youre on his horses you always know theyre going to be rock-hard fit and ready to win.Big Hammer made it three-straight, coming into the Thoroughbred Club Handicap (2400m) off wins at Cranbourne and Hamilton at his past two starts.Three-year-old colt Royal Ace remained unbeaten from two starts as he got home by a long neck in the Mypunter.com Handicap (1300m) in his city debut.Three riders were suspended for careless riding at the meeting with Luke Nolen copping an eight meeting ban while Regan Bayliss and Adam McCabe were suspended for 10 meetings. 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