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 Costa because he says Costa knew the job was going to Frederick and his teammate still taught me everything that he knew. 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 Wholesale Authentic Jerseys . The news was first reported on Gonzalezs Twitter account and confirmed by the Rockies. 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Note: The Calgary Flames announced Tuesday that Sean Monahan would not be made available to Canadas World Junior team.Richard Cockerill thinks Englands players are worth every penny of the new deal that will see their match fees increase significantly Players will be paid £22,000 per match from a new deal worth £20m over four years after negotiations between the Rugby Football Union and the Rugby Players Association were concluded. England vs Fiji November 19, 2016, 2:00pm Live on Get Sky Sports Get a Sky Sports pass Training fees, image rights payments and squad performance bonuses are also included in the new deal, which RFU chief Ian Ritchie said last week was a significant uplift on the previous incarnation. The chasm in finances will be on show this Saturday when England, their players buoyed by the new deal, take on a Fiji squad whose players are paid a mere £60 per day. Watch NOW TV Watch Sky Sports for only £6.99. No contract. Leicester director of rugby Cockerill, who won 27 England caps, told Sky Sports News HQ: Theres lots of money being generated within the game. Richard Cockerill feels Englands players are well worth the pay rise If you look at it in a pure context of what the lads generate - certainly around England income, where I think the union were £100m plus in profit the last financial year - those are the guys taking the field that the people are coming to watch, and I think they deserve every penny.dddddddddddd. They put their bodies on the line.If you look at that in comparison with football, when they are earning £200,000 or £300,000 a week its pretty modest. Nathan Hughes admits finances played a part in his decision to qualify for England Fiji-born Nathan Hughes will be in Englands squad after qualifying on residency grounds, and he admitted on Monday his decision to pledge allegiance to the Red Rose was motivated by financial reasons.I would love for Fiji to have more resources, but it is the way it is. They just have to deal with it and live on whatever they have got, Hughes said. It is their bread and butter. Thats the decision I made - I play my rugby to support my family and put shelter over their heads. Also See: New deal for England players Hughes frank over finances Attwood out of Fiji clash England outclass Springboks ' ' '