Formula One drivers have threatened to withdraw from the German Grand Prix if there are more tire blowouts during Sunday's race.

Last weekend, blowouts overshadowed the British GP, causing tire supplier Pirelli to introduce a new plan to stop the same thing from happening again at Nuerburgring.

"The drivers have decided if similar problems should manifest themselves during the German GP, we shall immediately withdraw from the event." the GPDA said Thursday.

  • Thirty-one cars, including 16 in the Sprint Cup Series, failed inspection before practices at Daytona International Speedway. NASCAR confiscated the teams' roof flaps, which are designed to keep cars on the ground during spins and wrecks. The roof-flap spacers had been machined down to reduce weight. Penalties could be possible.

    Involved were the cars of Joe Gibbs Racing's Kyle Busch, Denny Hamlin and Matt Kenseth, Roush Fenway Racing's Greg Biffle, Carl Edwards and Ricky Stenhouse Jr., Michael Waltrip Racing's Clint Bowyer, Martin Truex Jr. and Michael Waltrip and Roger Penske Racing's Joey Logano and Brad Keselowski. Cars driven by Jamie McMurray, Trevor Bayne, Casey Mears, Marcos Ambrose and Aric Almirola also failed.

    Inspectors found similar issues on 15 Nationwide cars.

    Golf

    Johnson Wagner and Tommy Gainey each shot an 8-under 62 to share the Greenbrier Classic lead in Sulphur Springs, W.Va. Webb Simpson and Jin Park shared third with 64s at Greenbrier Resort. Phil Mickelson struggled to a 74. His tee shot on the par-5 17th landed in a creek en route to a triple bogey. Cal's Michael Kim, on a sponsor exemption, shot 70.

  • Anders Hansen shot a 5-under 66 to lead the French Open in Saint-Quentin-En-Yvelines. Romain Wattel had a 67 at Le Golf National, which will host the 2018 Ryder Cup.

    NHL

    Philadelphia captain Claude Giroux agreed to an eight-year $64 million contract extension.

  • Patrik Elias signed a three-year, $16.5 million contract to remain with New Jersey, a day before he was eligible to become an unrestricted free agent. The Devils also re-signed Dainius Zubrus to a three-year, $9.3 million deal.

  • Boston sent Tyler Seguin to Dallas for fellow forward Loui Eriksson as part of a seven-player trade. Seguin led the Bruins in scoring during the 2011-12 season.

  • Danny Briere is headed home to native Quebec, agreeing on a two-year, $8 million contract with Montreal. He had his contract bought out by Philadelphia last week.

  • Minnesota agreed to terms on a two-year, $3 million deal with Keith Ballard, who was let go this week by Vancouver.

  • Paul MacLean, the NHL's coach of the year, signed a three-year extension with Ottawa.

    Track and field

    Bohdan Bondarenko threatened the 20-year-old world high jump record at the Athletissima meet in Lausanne, Switzerland.

    He cleared 7 feet, 10¾ inches. With the bar at 8-0¾, he nearly made it on his first of three attempts. Javier Sotomayor's world record is 8-0½.

    MLS

    Robbie Keane converted two penalty kicks in the closing minutes, rallying Los Angeles (8-7-3) to a 2-1 win over Columbus (5-8-5). ... Chivas USA (3-10-4) held FC Dallas (8-3-7) to a 0-0 draw. Dallas has gone five straight without a win but is two points behind Real Salt Lake atop the Western Conference.