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Editors note: This column appears each week to give ESPN Chalk readers a first look at the next weeks NFL lines. The Westgate Las Vegas SuperBook also puts out the advance lines on the prior Tuesday (so Week 6 lines will be posted this upcoming Tuesday), and well examine how the weekend action affected those lines from the openers on the Don Best odds screen. Well also look at which lines were the first to be bet by the professional bettors in Vegas (traditionally, those are the bettors most likely to fire away on these openers, though its not the exclusive club that it used to be). LAS VEGAS -- News involving quarterbacks is always a big deal in the NFL. Of course, Tom Brady is returning from his suspension in Week 5, but the biggest impact on this weeks lines are all the QBs who were injured this past weekend.Carolinas Cam Newton, Arizonas Carson Palmer and Denvers Trevor Siemian were all sidelined during their teams games on Sunday afternoon. In addition, Chicagos Jay Cutler is listed as questionable and might be returning for the Bears.Lets take a look at how Week 5 has been bet into place, with an eye toward how those QB injuries shape the lines for their teams and where they might be headed.(The line for each game is from the Westgate Las Vegas SuperBook as of the kickoff of Monday Night Football.)Elandon Roberts Jersey . They were putting most of their energy into a record-setting offensive display. James Ferentz Jersey . - Chris Tierney snapped a tie with a power-play goal late in the third period as the London Knights rallied from a 3-0 deficit to beat the Erie Otters 5-3 in Ontario Hockey League action on Wednesday. https://www.patriotsjerseysale.com/1091p-leon-gray-jersey-patriots.html . - Chris Tierney snapped a tie with a power-play goal late in the third period as the London Knights rallied from a 3-0 deficit to beat the Erie Otters 5-3 in Ontario Hockey League action on Wednesday. John Hannah Jersey . -- James Young couldnt wait to apply those tweaks to his jump shot, and the first one he made against UT Arlington told him it could be a good night. Ben Watson Jersey . -- The St. Johns IceCaps weathered a wild first period with the help of goaltender Jussi Olkinuora, before finding offensive inroads in the second.FRISCO, Texas -- Tyron Smith and Travis Frederick signed lucrative second contracts with Dallas after starting right away as first-round picks, and Zack Martin is next.The Cowboys have made significant investments in their offensive line for five years, and its paying off for two rookies and budding stars in quarterback Dak Prescott and running back Ezekiel Elliott.Dallas doesnt even miss the injured franchise leader in passing yards and touchdowns, Tony Romo. And opposing defenses are certainly noticing.Now I see why hes got 100 million dollars on his line, Cincinnati cornerback Adam Jones said after last weeks 28-14 loss to his former team and former boss, Dallas owner Jerry Jones. Some of those holes my daughter could have run through.The Cowboys (4-1), who visit Green Bay (3-1) on Sunday, hadnt drafted a lineman in the first round since Jones bought the team in 1989 when they took Smith ninth overall in 2011 thinking he would eventually be their left tackle.Two years later, Frederick went 31st, then Martin at No. 16 the year after that.Three first-rounders in four years, followed by an eight-year, $98 million extension for Smith that pushed the total value of his deal over $100 million and made him the second player after Romo in franchise history to hit that mark.This preseason, Frederick signed a six-year, $56 million extension that makes him the highest-paid center in the NFL.Martin figures to get something in the range of $10 million per season -- tops among the leagues right guards at the moment. And its at the bottom of his list of concerns.We focus on whats important, Martin said. Its not hard to stay on the straight and narrow in that room.Doug Free, a 32-year-old right tackle in his 10th season, has been the other constant on the line the past five years.Ron Leary, undrafted four years ago, started at left guard for two years before the addition of Lael Collins, a projected first-rounder who went undrafted last year because his name surfaced in a murder investigation just before the draft. Collins replaced Leary last year, but Leary is starting again with Collins sidelined by a toe injury.Frederick credits former Dallas center Phil Costta because he says Costa knew the job was going to Frederick and his teammate still taught me everything that he knew.dddddddddddd Martin says he was just following the example of fellow first-rounders Smith and Frederick.And Frederick said Leary and Collins worked through a potentially awkward situation with both staying on the roster after Collins took over. Leary asked for a trade that never came in the offseason, but was ready when Collins went down.With Leary starting again, its the same line that blocked for NFL rushing champion DeMarco Murray in 2014. Now Elliott is the league leader with 546 yards through five games.I think the common denominator is the group, Frederick said. The group helped bring me along the right way. It would have been really easy for those guys to say, `Oh, hes a rookie, were not going to help him out.While Elliott struggled with a per-carry average of less than 3 yards in an opening loss to the New York Giants, the average has risen steadily since. The former Ohio State star had his first breakaway touchdown against the Bengals, a 60-yarder that put Dallas up 28-0.Prescott has been sacked seven times, matching the second-lowest total in the league. The protection probably has something to do with him being eight passes away from breaking Tom Bradys record of 162 attempts without an interception to start a career.Tight end Jason Witten, in his 14th season, says Fredericks intelligence helped him master Dallas system quickly, and Martins athletic ability helped him transition to guard after spending significant time at tackle at Notre Dame.And of course Tyron, Witten said. If you can pick one guy, thats who youre picking.And Smith started a trend thats paying off for the Cowboys.O-linemen, we kind of put them in this box, Witten said. But when you have success, it can get to anybody. That group, if anything they put their head down even more and go to work.---Online:AP NFL website: www.pro32.ap.org and www.twitter.com/AP-NFL---Follow Schuyler Dixon on Twitter at https://twitter.com/apschuyler ' ' '