Greg Biffle ended his 49-race NASCAR Sprint Cup winless streak by breaking through for victory at the Samsung Mobile 500 at Texas Motor Speedway Saturday. Biffle passed Jimmie Johnson with 30 laps left to give owner Jack Roush another NASCAR victory in Texas. “We knew it was a matter of time before we were going to win one of these things. We've been running so good,” Biffle said. “Catching the 48 at the end, it was all I had to be able to get to him. It seemed like when we got to him, it was too easy.” Johnson led 156 of the 334 laps while going for owner Rick Hendrick's 200th career victory. But he never recovered, even scraping hard into the wall trying to catch up after Biffle drove under him in Turn 3 and completed the pass before the start-finish line. “I was surprised I didn't have to deal with him anymore,” Biffle said. “I thought he was going to be right there.” Biffle, the season points leader, went on to win the fastest Cup race at the high-banked Texas track. He finished 3.2 seconds ahead of the Chevrolet driven by Johnson. It was Roush's ninth win in 23 Cup races at Texas, and completed a Lone Star State weekend sweep. Ricky Stenhouse Jr. won the Nationwide race on Friday. Biffle got his 17th career victory. It was his first since an October 2010 race in Kansas, where the series goes next week. After starting third, Biffle was among the lead pack the entire race, leading 91 laps on a fast-paced and windy night. There were only two cautions for 10 slowed-down laps, both for debris, and the race finished with a record 234 consecutive laps of green-flag racing. Mark Martin finished third in a Michael Waltrip-owned Toyota, followed by Jeff Gordon and Roush driver Matt Kenseth. Polesitter Martin Truex Jr., another Waltrip car, finished sixth after leading 68 laps. Biffle got his eighth consecutive top-10 finish at Texas, where he had a victory in 2005 even before that stretch. For Hendrick Motorsports, it was the second race in a row that Rick Hendrick was close to getting his 200th victory. Johnson, Gordon and teammate Dale Earnhardt Jr. were running in the top three at Martinsville two weeks ago before a late restart in the last race before the Easter weekend break. But Clint Bowyer's aggressive inside move took out Johnson and Gordon, and Earnhardt ended up third. “It's nice to be running well. It's nice to be in this position,” Johnson said. “But I want to get back to our winning ways really soon.”