The Summer Bash, which is the Championships answer to Super Leagues Magic Weekend, kicks off this weekend and promises some mouth-watering action. This years Summer Bash boasts the strongest possible round of fixtures in the Kingstone Press Championship, headlined by Saturdays massive clash between Bradford Bulls and Leigh Centurions.However, all the teams have plenty to play for and with points and bragging rights on offer, we take a closer look at the action... Sheffield Eagles vs London Broncos: Sat, 2.30pm, Sky Sports 5 HDWith a well-publicised transition to a full-time playing roster in 2016, many expected Sheffield to really push on in the Championship this season. In reality, the club has gone the opposite way and find themselves sitting outside that all-important Top 4, eight points adrift of fourth-placed Featherstone Rovers.London Broncos, on the other hand, have been a revelation in 2016 and find themselves just three points behind league leaders Leigh Centurions. After a disappointing first season outside the Super League elite in 2015, the Broncos have steadied the ship and have made progress 12 months on, even boasting an unbeaten record at their new Ealing home.London produced the upset of last years Summer Bash - defeating the Eagles 46-6 in arguably their best performance of the season - and with a 56-12 victory at Sheffield in April, will head into this one as favourites. Coming off a strong performance against the Bulls last Friday, and with a couple of extra days rest, could the Eagles get revenge against the side that blew them off the park last year? A feast of live sporting action is on Sky Sports this weekend - dont miss it! Workington Town vs Whitehaven: Sat, 4.30pm, Sky Sports 5 HDThe Championships Cumbrian contingent face off in what is effectively a basement battle as the two clubs linger at the foot of the table after a disappointing season so farThis derby match is rarely dull - and with local bragging rights at stake, expect a fierce encounter. Town have won five of their last six against Haven and with some more positive performances of late will head into the match with improved confidence.Jarrod Sammut could be the difference and with his influence and spark, Workington could grab their third success this season which would halve the deficit behind Whitehaven, who sit directly above in 11th.Bradford Bulls vs Leigh Centurions: Sat, 7pm, Sky Sports 2 HD New Bradford Bulls coach Rohan Smith outlines his ambitions with the club New Bradford coach Rohan Smith takes charge of only his second game since succeeding James Lowes. The Bulls, who currently sit third, face Championship table-toppers Leigh Centurions in Saturdays main event - and if the last four league meetings between these two are anything to go by, there should be plenty of points in this one.Smith will have to make do without Lee Gaskell as Bradfords star man is ruled out through injury - and with their opponents boasting a close to fully fit squad, the Bulls will go in as underdogs.Their most recent meeting in February ended all-square, with the home side completing one of the greatest comebacks in recent history. The Centurions led 32-6 with 15 minutes left - only for Bradford to level with 26 unanswered points. Who can predict what might happen this time round? Leigh points machine Martyn Ridyard looks ahead to the Summer Bash clash with Bradford Dewsbury Rams vs Batley Bulldogs: Sun, 12.30pm, Sky Sports 3 HDThe Heavy Woollen derby kicks off day two of the Summer Bash, as the Bulldogs look to regain their early season form that saw them flying at the top of the Championship. John Kears side inflicted Leighs only defeat so far in the 2016 opener, and drew with Bradford a month later. Sitting just a point behind fourth-placed Featherstone, the Bulldogs will remain quietly confident of maintaining a Top 4 finish.The Rams havent recaptured their impressive 2015 form, and find themselves struggling to make any impact this time round. Its a derby though - and with a 19-12 win in this fixture 12 months ago, dont rule out the Rams getting a repeat result on Sunday.Oldham Roughyeds vs Swinton Lions: Sun, 3pm, Sky Sports 3 - Red ButtonMany predicted that Championship newcomers Oldham and Swinton would be languishing at the bottom of the table in 2016 - but their form over the first half of the season has proved many punters wrong, as both have recorded notable victories already.The Lions five-game winning streak last month featured notable away victories at Halifax and Batley, while the Roughyeds have turned over Featherstone and the Bulldogs - and who could forget that historic Challenge Cup defeat of Super League side Hull KR?Last time out, the Lions went home with the two points after a 28-18 home win - and as both sides will be looking to keep pace with the teams immediately above them in the table, a tight encounter can be expected.Halifax RLFC vs Featherstone Rovers: Sun, 5.10pm, Sky Sports 3 The weekend culminates with two teams desperate for a Top 4 finish, and a chance to make a mark in the Super 8s Qualifiers, as fierce Championship rivals Halifax and Featherstone go head-to-head. Halifax and Featherstone meet in the climax to this weekends Summer Bash. Ian Hardman recalls losing the 2010 Championship Grand Final These two have produced some fiery contests over the years - none more so than in April at the Big Fellas Stadium. A last-minute Steve Tyrer penalty denied a Jordan Lilley-inspired Rovers side two huge points in a game that was always in the balance.Its been described as a four-point game - victory for Rovers would create daylight between themselves and Halifax - but a Fax win could really set the race for the Top 4 alight. With so much at stake here, the 2016 Summer Bash could culminate in a Championship classic.Watch Summer Bash live on Sky Sports this weekend. Or watch the game without a contract for £6.99 on NOW TV. LONG POND, Pa. -- When NASCAR announced revisions to the foot box and floorboard areas would be optional for all races except for restrictor-plate events in 2017 until full implementation in 2018, it put teams in the familiar position of trying to determine whether to go with safety or speed.It really is no decision. Kyle Busch broke his right leg and left foot in a crash in 2015 but he knows his team wont make the proposed changes unless they have to.The increased thickness of the firewall with other elements of the redesign will make the cars handle so differently and it would be a competitive disadvantage to run them.I doubt youll see teams implementing them into their cars too early before theyre mandatory, Busch said. It just doesnt make sense to us. Obviously were all competitors and were going to build cars to the capabilities that we know how to make them as fast and as light and everything as possible.If they would implement a rule where you make all of these changes and youre able to run your car 25 pounds light, then we would all do it right away. But adding weight to the cars and then being able to take that weight back out is going to be a challenge for some of these teams so its going to be a bit tricky.This change isnt as simple as changing a suspension piece or a body panel. It is a big enough change that all chassis will need to be recertified by NASCAR.The weight in the firewall added is above the center of gravity -- above the master cylinder -- that it isnt low enough to help performance and forward bite, Team Penske competition director Travis Geisler said.Its a massive rebuild of the car, Geisler said. It definitely is a big departure from how were building them right now.Teams usually build at least some nnew Daytona and Talladega cars every year, so they can start working on those changes now for next season.dddddddddddd Geisler said it might be possible to retrofit current cars but that is debatable.He said there is a 1-inch toeboard foam that is being developed as part of the new designs. Any driver with long legs would not be able to start using the foam before then, but smaller drivers possibly could put that foam in the current car.There are some drivers that can put that in today and never even notice it ... because their feet are so far back, Geisler said.Chevrolets Sprint Cup manager Alba Colon said changes like this take time no matter how quickly everyone would want to implement as soon as possible for safety.When you make a change like this, you need some time to figure out the whole thing, Colon said. You have already put all these [current] vehicles in your computer systems and simulation. You will have to go and change everything again.The one concern likely is the challenge of making the cars so stiff that no energy is absorbed by the car in an accident.Obviously theres some debate as to whether or not stiffening up the cars make them too stiff when we crash and you dont have the opportunity to absorb the crash itself through the car like IndyCars, Busch said.We would all say those cars absorb the crash obviously. I feel like with our advancements in the SAFER Barriers that were trying to make sure that the walls absorb our crashes and the cars stay intact for the drivers so we dont have injuries like we saw with myself or potentially have seen with Austin Dillons [2015 Daytona] crash. ' ' '