NEW YORK -- The third time was the charm for the new retractable roof over Arthur Ashe Stadium.The U.S. Tennis Association unveiled the $150 million roof over the centerpiece court at the USTA Billie Jean King National Tennis Center on Tuesday -- after some glitches.The roof closed with ease in its first official demonstration, but tennis legend Billie Jean King tried multiple times to open it with the push of a button. Her third attempt succeeded.Matt Rossetti, president of the architectural firm that drew up the roof plan, said the issue could happen at the upcoming US Open but a team of engineers would be on hand to fix it if necessary.The roof, which is the size of 17 Olympic swimming pools, will be ready when the US Open begins on Aug. 29. The mens final was delayed a day until Monday because of rain for five straight years from 2008-12.USTA officials had long maintained that adding a roof over Ashe wasnt feasible. But in 2013, Rossetti created a plan and the roof was added over two years.Here at the Billie Jean Tennis Center, we are making the impossible happen, USTA executive director Gordon Smith said.Moving at a top speed of 25 feet per minute, the roof over the 23,771-capacity stadium is built to close or open in under seven minutes. Twenty-two tennis courts could fit inside the 62,500 square-foot roof opening.There are already retractable roofs over the main stadiums at the sites of two other Grand Slam tournaments, Wimbledon and the Australian Open. French Open organizers also plan to add one.The Ashe roof is expected to be used only for rain, unlike the Australian Open, which also closes its roof in cases of extreme heat. The Chase name and logo will be on both the north and south sides of the roof for the US Open.Ashes retractable roof features two panels atop a 6,500-ton steel superstructure and is covered to provide shade for the spectators. 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Eddie Jones has drafted in a number of consultants from outside the England bubble to keep players and coaches on their toes and for Melbourne Storm defence guru Jason Ryles the main lesson he learned from his fortnight with the national team was the importance of simplicity.Ryles, who is the brains behind the best defence in the NRL at the Storm, went to Portugal on Englands training camp at the start of November and then spent the week with the team as they prepared for South Africa, tasked by Jones with bringing a harder edge to their defence.He followed in the footsteps of Jonny Wilkinson, George Smith, Glen Ella, Will Greenwood and his rugby league associate Andrew Johns in spending time with England as Jones continually looks for fresh ideas as he seeks to achieve his goal of turning them into the worlds dominant rugby force by 2019.Ryles time with England was arranged through the national sides new head of sports science, Dean Benton, who was at the Storm last year but was recruited by Jones. Bentons appointment and the decision to bring in Ryles for that short period point towards Jones desire to see his side continually adapt and evolve through external, objective perspectives on how they can improve.He took a great deal away from his time with England and enjoyed seeing how Jones works, but was struck by the clarity with which messages were delivered to the players.Eddie made things as simple as possible and thats a secret behind why theyre so successful, Ryles told ESPN. I saw a group of players who wanted to play for their coach and wanted to do something right and bought into what he was doing.It was outstanding. Theyre good quality blokes and you can see why theyve had the success theyve had over the past six to eight months.Their work ethic was outstanding and I was impressed with all the coaches, especially Eddie Jones.Id never spoken to him before, only heard of him. Hes very insistent on the basics.Its similar to here [Melbourne Storm] so its reassuring that a coach of his quality thinks along the same lines as us. Were lucky to have the best rugby league coach of the modern era here in Craig Bellamy -- to have him as my mentor is great -- and then to see Eddies processes and how he reinforces the basics of the game was a great experience and great to be part of.ddddddddddddIt has been a reciprocal relationship. Steve Borthwick, Englands forwards coach, spent a day with the Storm back in June, in a watching brief, and Ryles then headed back the other way and kept a close eye on how Paul Gustard, Englands defence guru, works with his players.I have a really high opinion of him, Ryles said of Gustard. Hes quality coach, he keeps things simple but he gets his message across a little differently to other coaches.He speaks very well, very polished and very effective. Hes had a lot of success with Saracens, thinks outside the box and I enjoyed picking his brains.Away from developing his own coaching nous, Ryles focused on Englands tackling ahead of what was to be a bruising encounter with the Boks. Having played against England centre Ben Teo when he was back in rugby league at the Rabbitohs, Ryles used him to help translate his league ethos across to union, focusing on the various nuances in the contact area.They arrowed in on the hit and stick approach and two-man tackles with the players then picking Ryles brains on a one-to-one basis.The main guys I worked with were Owen Farrell, George Ford -- just with their first contact -- and Billy Vunipola, where we did a bit with his ball carrying and tackling, Ryles said. I worked a bit with them after training and the other guys were so receptive.Billy is outstanding -- hed look great in a rugby league jumper but unfortunately thatll never happen.Hes such a great player but an even better bloke. He really stood out for me as he always wants to improve, he spends so long trying to do that and it was so impressive to see.After seeing England defeat the Springboks, Ryles returned to Melbourne inspired and with a new understanding of why simplicity is sometimes beautiful and brutal when it comes to defence. ' ' '