BEIJING, China - Rafael Nadal is back in form on the tennis court a€” and in his sharp-tongued critiques of the ATP tour.The second-seeded Spaniard reached his first quarterfinal since capturing his record ninth French Open title in June with a 6-3, 6-4 win over German qualifier Peter Gojowczyk at the China Open on Thursday, then blasted the choice of tennis balls at the tournament.The ball is so bad here, Nadal said. If you throw the ball on the floor, the bounce goes everywhere. Is not a question of winning or losing. I won in Rio (earlier this year) with this ball.Its just that were competing at the top level of our sport, tennis, and the ball is an important thing.This isnt the first time the 14-time major winner has complained previously about the ball in question a€” manufactured by Head. He also criticized the decision to switch ball manufacturers from tournament to tournament, saying it could result in injuries.This week we are playing with one ball. Next week we are playing with a different ball, he said. Thats dangerous for the shoulder, dangerous for the elbow.Head is a corporate sponsor of the ATP tour, but each tournament has the right to choose the ball it wants to use from an approved list.Andy Murray echoed Nadals complaints about the difficulty of adjusting to a new ball each week.If you want to see consistently high level tennis, its very difficult when youre changing balls from week to week -because they all react differently, he said after his 6-2, 6-2 win over Pablo Cuevas.Im sure if you gave golfers a different ball to play with each week, it would take them time to adjust to that, as well.Nadal wasnt nearly as critical of his own game in his second match back from a two-month layoff due to a right wrist injury.He was sharp for much of the match until the final game when he double-faulted and made two unforced errors to give Gojowczyk three break points. He fought them off, however, and closed it out on his fourth match point.Nadal faces another qualifier in the quarterfinals, Martin Klizan, who advanced when seventh-seeded Ernests Gulbis of Latvia retired with a shoulder injury while trailing 6-2, 3-0.Murray takes on U.S. Open champion Marin Cilic, a 6-3, 6-3 winner over Portugals Joao Sousa.In the womens draw, top-ranked Serena Williams recovered from a second-set lapse to defeat Lucie Safarova, 6-1, 1-6, 6-2.After the match, Williams skipped her post-match news conference, releasing a statement saying she had a little swelling in her knee. She wore strapping on the knee during the match she said was preventative.Simona Halep of Romania won a back-and-forth match against Andrea Petkovic of Germany 7-6 (4), 5-7, 7-6 (1), then immediately withdrew from the tournament with a left hip injury.The second-seeded Halep took a medical timeout for treatment on her hip after the first set, but returned to complete the match, which featured 17 breaks of serve and 105 combined unforced errors (61 from the Romanian).It was a tough match against Andrea today, and I had to fight a lot. Im happy I was able to win and finish the match in the right way, but I have a hip injury and it would be risky for me to play again tomorrow, Halep said in a statement.Haleps withdrawal gave ninth-seeded Ana Ivanovic of Serbia a pass to the semifinals. The 2008 French Open champion, who is fighting for a spot in the WTA finals in Singapore, earlier beat Sabine Lisicki of Germany 6-3, 7-5.Two-time Wimbledon champion Petra Kvitova also advanced when Venus Williams withdrew before their match with a virus. Her illness came days after sister Serena retired from a match at last weeks Wuhan Open with a virus, as well.Seventh-seeded Angelique Kerber of Germany was defeated by two-time major winner Svetlana Kuznetsova 2-6, 6-4, 6-3, while No. 12-seeded Ekaterina Makarova of Russia fell to Roberta Vinci of Italy 6-1, 0-6, 7-5.Other mens winners included third-seeded Tomas Berdych and fifth-seeded Grigor Dimitrov. Seattle Seahawks Jerseys China . 5 Trade Deadline isnt that far away and teams will be making decisions on whether to buy, sell and decide which players can make the biggest difference and hold the greatest value. Ugo Amadi Jersey . Goergl, the 2011 world champion, started 28th after the other top contenders had already gone down but had the fastest time at each interval. Goergl finished the demanding 3-kilometre Kaelberloch course in 1 minute, 47. http://www.cheapseahawksjerseysauthentic.com/?tag=authentic-gary-jennings-jr-jersey . Cory Batey and Brandon Vandenburg were each convicted on four charges of aggravated rape, one of attempted aggravated rape and two for aggravated sexual battery. Vandenburg was also found guilty of tampering with evidence as well as an unlawful photography charge. Cheap Seahawks Jerseys China . The Raptors two leading scorers were never able to co-exist the way they hoped or the team had envisioned, but individually DeRozan was thriving, in the midst of a career season. 12th Fan Jersey . -- Thirty years ago, the Detroit Pistons beat the Denver Nuggets 186-184 in triple overtime, a game that remains the highest scoring in NBA history.Red Bull have delivered emphatic proof that they can challenge Mercedes at this weekends Monaco GP by surging ahead in Thursday practice. After Mercedes Lewis Hamilton led the way in morning practice, Daniel Ricciardo finished Practice Two half a second clear of the world champion. The Australian, armed with an upgraded Renault engine, topped the timesheet with a lap of 1:14.607 - just two tenths shy of the fastest lap ever recorded around Monte Carlo, set by Michael Schumacher in 2004. Despite also running on the ultrasofts, the new brand of tyres being debuted by Pirelli, Hamilton could only close to within a tenth of Ricciardo with his best effort before the Australian found another half-second of pace. While the size of Ricciardos one-lap advantage indicates that Red Bull and Mercedes may have been running different levels of fuel, his strong long-run stint at the end of the session offered further evidence that the bullish Bulls may now be a genuine match for the hitherto-dominant Mercedes.Obviously weve got a good car around here as well, said Ricciardo. This track is certainly one where you can find a little bit more when you can push it on the limit. Ive got some good confidence, which is the most important thing around here.Sky F1 pundits: Red Bull speed unbelievable With Ricciardos team-mate Max Verstappen in fourth, just behind world championship leader Nico Rosberg, Sky F1s Martin Brundle exclaimed from trackside: Those Red Bull drivers have got absolutely unbelievable speed and confidence around here. Absolutely unbelievable. It defies belief that they can take that much speed into this swimming pool section.The resurgent Red Bull outfit, who threatened to leave F1 just a year ago, won two weeks ago in Spain and their RB12 chassis appears particularly well suited to the notoriously tight confines of the legendary Monte Carlo circuit.When is the Monaco GP on Sky Sports and how can you watch it?But Ferraris struggles continued witth both Sebastian Vettel and Kimi Raikkonen only on the outskirts of the top 10 behind Toro Rosso duo Daniil Kvyat and Carlos Sainz.dddddddddddd Vettels difficulties were highlighted by an unusual spin into Mirabeu which resulted in the apologetic former world champion requiring a new rear wing. We tried a couple of things and its fair to say some of them didnt work, said Vettel. You could call it pressure but its also the reason we are here. Were not here to finish eighth, or fifth, were here to win.Jenson Button rounded off the top 10 for McLaren on a relatively quiet day for the team despite pre-event predictions they could catch Ferrari. On a difficult day for the field as they adjusted to the new range of Pirelli tyres and a green circuit, Rio Haryanto, Romain Grosjean and Kevin Magnussen all crashed out. The exit from the tunnel was particularly hazardous, catching out both Grosjean in the Haas and Manor rookie Haryanto. Its understood that despite substantial financial backing from the Indonesian government, Haryantos seat may be in jeopardy with American driver Alex Rossi waiting in the wings.Monaco GP Practice Two timesheet1. Daniel Ricciardo, Red Bull, 1:14.6072. Lewis Hamilton, Mercedes, 1:15.2133. Nico Rosberg, Mercedes, 1:15.5064. Max Verstappen, Red Bull, 1:15.5715. Daniil Kvyat, Toro Rosso, 1:15.8156. Carlos Sainz, Toro Rosso, 1:15.9817. Kimi Raikkonen, Ferrari, 1:16.0408. Sergio Perez, Force India, 1:16.1209. Sebastian Vettel, Ferrari, 1:16.26910. Jenson Button, McLaren, 1:16.32511. Nico Hulkenberg, Force India, 1:16.48712. Fernando Alonso, McLaren, 1:16.72313. Esteban Gutierrez, Haas, 1:16.78214. Valtteri Bottas, Williams, 1:16.84915. Romain Grosjean, Haas, 1:16.87416. Felipe Massa, Williams, 1:17.28617. Kevin Magnussen, Renault, 1:17.53018. Marcus Ericsson, Sauber, 1:17.56219. Jolyon Palmer, Renault, 1:17.76120. Felipe Nasr, Sauber, 1:17.99921. Rio Haryanto, Manor, 1:18.64722. Pascal Wehrlein, Manor, 1:18.814Watch the Monaco GP live on Sky Sports F1. The race starts at 1pm on Sunday, with build-up underway at 11.30am. Or watch the race without a contract for £6.99 on NOW TV. 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