JOLIET, Ill. — Body-slamming and bump-drafting were the order of the day — at 1.5-mile Chicagoland Speedway, no less — and 50-year-old Martin was the last man standing in a wild LifeLock.com 400. Pulling away after a double-file restart with two laps left in Saturday night’s NASCAR Sprint Cup race, Martin won his series-best fourth race of the season and the 39th of his career. Martin gained two positions to 11th in the standings and will have at least 40 bonus points for the Chase for the NASCAR Sprint Cup seven races hence, if he can hold a position in the top 12. Martin took the checkered flag .415 seconds ahead of Hendrick Motorsports teammate Jeff Gordon. Kasey Kahne ran third, followed by Cup points leader Tony Stewart and Denny Hamlin. Ryan Newman, polesitter Brian Vickers, Jimmie Johnson, Clint Bowyer and Juan Pablo Montoya completed the top 10. “That was fun,” Martin exulted after climbing from his car. “That’s what life’s all about right there. These guys (Martin’s No. 5 Chevrolet crew) deserved to win. We could have parked the car (Friday) with an hour left in practice. I knew it was awesome. “But the best car doesn’t usually win. The double-file restarts are to mess the best car up so he doesn’t win, to make it good for the fans — and it did — but luckily we pulled it off anyway.” As the race neared its end, the action intensified. Contact from Dale Earnhardt Jr.’s Chevrolet cut the left rear tire of Paul Menard’s Ford on Lap 227 of 267, igniting a …