The Dallas Cowboys have one of the NFLs top offenses -- via DVOA, EPA or any other advanced metric you choose -- and we all know why.They found a shockingly efficient rookie quarterback in the fourth round of the draft.Or is it because their rookie tailback is leading the NFL in rushing?And lets not forget how much easier it is to play quarterback and running back behind an offensive line as strong as the Cowboys.How much is the Cowboys success this season is a result of quarterback Dak Prescotts poise and precision? What about Ezekiel Elliotts league-leading 891 rushing yards? And would any of it be possible without an offensive line that is on its way to helping a third different runner to a 1,000-yard season in as many years?The numbers, courtesy our weekly assist from ESPN Stats & Information senior statistics analyst Jacob Nitzberg, tell us a story of co-dependence and mutual enhancement.It all starts, as they say, up front. There arent many ways to quantify offensive line play in a direct way. Usually we rely on scouts, who overwhelmingly have praised the Cowboys efforts, or look at the passing and rushing numbers they help produce.ESPNs analytics department has developed a pass protection metric that tracks the rate at which an offensive line controls the line of scrimmage on dropbacks. (A fuller explanation can be found here.) The Cowboys rank No. 2 overall this season, one of 10 teams that have controlled the line on more than half of their passing plays.Best pass protection rate, 2016One of the ways that rate has helped Prescott is to allow him a relatively long time in the pocket to find open receivers and make good decisions. This season, Prescott has spent more time per throw in the pocket on average than all but one qualified NFL quarterback.In the Cowboys 35-10 victory over the Cleveland Browns in Week 9, Prescott spent an NFL-high 2.59 seconds on average in the pocket. He has finished a game below the NFL average (2.28 seconds) only once this season, when he averaged 2.26 seconds in the pocket during a 24-17 victory over the San Francisco 49ers in Week 4.Longest average time in pocket, 2016 (in seconds)With enough time to stand in the pocket, Prescott has been able to establish himself as one of the NFLs most accurate downfield throwers.He struggled in a Week 1 loss to the New York Giants, missing on eight of 10 passes that traveled at least 15 yards in the air. During the Cowboys ensuing seven-game winning streak, however, he has been lights out.No quarterback has completed such passes at a higher rate than Prescott over that period; his completion percentage of 68.4 on throws of at least 15 yards in the air is 25 points above the league average.Best completion percentage on passes thrown 15-plus yards downfield, Weeks 2-9That accuracy is a credit to Prescott, as is his performance on the occasions when opponents do pressure him. That has happened more often than you might think. Despite controlling the line of scrimmage at a high rate, the Cowboys line has still allowed Prescott to be pressured on 27.9 percent of his dropbacks -- slightly above the league average of 26.3 percent.But Prescott hasnt wilted under the heat, producing a 54.8 Total Quarterback Rating when pressured -- fourth highest in the NFL and almost twice the league average.Naturally, it helps when opposing defenses must modify their pressure and account for the NFLs leading rusher on most plays. Elliott has rushed for more yards in the first eight games of his career than all but two running backs. And he has a chance to break Eric Dickersons rookie record for rushing yards in a season (1,808).Most rushing yards, first eight NFL gamesIs Elliott doing this on his own or is he a product of a Cowboys line that helped a declining Darren McFadden to eclipse 1,000 yards last season? Lets call it a combo platter.Elliott leads the NFL in yards before contact, which generally speaking implies the consistency of strong blocking. But he is also atop the league in rushing yards after contact, which are a credit to the runner.It helps that Elliott has gotten 177 opportunities to carry the ball this season, second most in the league, but you get the point.Most rushing yards before contact, 2016The constant threat from Elliott helps Prescott in plenty of ways. Many are intangible, but at least one can be quantified.Prescott has the NFLs second-best completion percentage on play-action passes. Those passes still require an accurate throw, but it is no doubt easier to complete when defenders are as drawn to Elliott as they are.Best completion percentage on play-action, 2016And that, my friends, might be as close as we can get to an understanding what is making this Cowboys offense work. It is a little bit of everything, complementing each other in just the right way. 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Burke is expected to miss two to three months after breaking a finger in the teams third preseason game. Tinsley, a 10-year veteran, spent the last two seasons in Utah, where the point guard averaged 3. PHILADELPHIA -- Jeremy Hellicksons trade value is on the rise.Hellickson struck out eight in eight impressive innings, Tyler Goeddel hit a two-run homer and the Philadelphia Phillies beat the Miami Marlins 4-1 on Wednesday night.Hellickson (7-7) allowed one run and five hits. The 29-year-old right-hander is 3-3 with a 3.00 ERA in his last seven starts. He is likely to be traded to a contending team before the Aug. 1 trade deadline.If anybody has interest, Im sure they were impressed, Phillies manager Pete Mackanin said. He looked very determined to have a good game. He was totally focused and he produced.Hellickson started on opening day after signing a $7 million, one-year deal with the Phillies in the offseason. He wants to stay put.I want to be here. I want to win here. I really think we can, Hellickson said. My focus is here right now.Miamis Wei-Yin Chen (5-4) gave up four runs and 11 hits in 5 1/3 innings.Tried to attack them and they did a good job, Chen said through a translator. They made adjustments. I did not feel as well as my last time. Hopefully next time I will do better.Chris Johnson hit a solo homer in the fifth for the Marlins.Goeddel snapped an 0-for-16 slump with an opposite-field shot to right to give the Phillies a 2-0 lead in the first. He lined an RBI single to right to make it 3-0 in the second.It was fun to be out there again, said Goeddel, who hasnt played much lately. I have a better idea of what I need to do.Peter Bourjos had a sacrifice fly in the sixth.Hellickson didnt need much support. He shut down the Marlins for his first wwin since July 1.ddddddddddddhats the key for me every time out -- fastball command, keep the fastball down, he said. The fastball was down tonight, so the changeup was working off that well.Jeanmar Gomez finished for his 26th save in 29 tries.STATSGoeddels three RBI are a career best. The homer was his first hit since July 1. ... 2B Cesar Hernandez snapped an 0-for-20 slump with an infield single in the second inning. He finished 3 for 4. ... Giancarlo Stanton was 0 for 4 and is 1 for 12 in the series. ... Philadelphias starters have tossed at least six innings in each of their last seven starts. ... Marlins C J.T. Realmuto is batting .368 (32 for 87) with a .415 on-base percentage over his last 21 games.STANDINGSThe Marlins lost (51-43) for just the second time in nine games. They lead the Mets by one game for the second wild-card spot in the NL. The Phillies (44-52) are eight games behind Miami.MR. 3000Ichiro Suzuki flied out to deep right-center as a pinch-hitter in the eighth inning. He remains at 2,994 career hits.TRAINERS ROOMMarlins: Manager Don Mattingly said 2B Dee Gordon is fine after cramping in his leg forced him to leave a game early at Triple-A New Orleans. Gordon is serving an 80-game suspension for a positive drug test and is eligible to rejoin Miami on July 28.UP NEXT:RHP Tom Koehler (6-8, 4.68 ERA) starts for the Marlins while RHP Jerad Eickhoff (6-10, 3.76) goes for the Phillies in the series finale Thursday. ' ' '