The United States Anti-Doping Agency (USADA) has notified the UFC of a second failed drug test submitted by former heavyweight champion and WWE star Brock Lesnar.UFC officials were informed Tuesday that Lesnar, 39, failed a fight night drug test at UFC 200 on July 9 in Las Vegas. Results showed the presence of the same unidentified banned substance Lesnar tested positive for on June 28.The substance that Lesnar tested positive for hasnt been officially identified, but a source told ESPN that the flagged substance is clomiphene, the same anti-estrogen blocker for which Jon Jones tested positive.Neither of those test results was available to the promotion on July 9, which is how Lesnar (6-3) was still able to fight Mark Hunt at T-Mobile Arena. Lesnar won the fight via unanimous decision.Lesnar, who is still under contract with the WWE and came out of retirement to face Hunt earlier this month, has not said much on the initial June 28 test. He told The Associated Press last week, We will get to the bottom of this.His appearance at UFC 200 marked Lesnars first professional fight since December 2011. His financial purse, as reported to the Nevada State Athletic Commission (NSAC), was $2.5 million.Under the UFCs anti-doping program, which went into effect in July 2015, results management and adjudication of the case falls to USADA, although Lesnar will also be subject to the jurisdiction of the NSAC. The UFC and NSAC withhold the right to fine and suspend Lesnar, in the result of a confirmed doping violation. Lesnar has not publicly disclosed whether he intends to have his B-samples tested.It is important to note that, under the UFC Anti-Doping Policy, there is a full fair legal review process that is afforded to all athletes before any sanctions are imposed, UFC said in a statement. The Nevada State Athletic Commission also retains jurisdiction over this matter as the sample collection was performed at UFC 200 in Las Vegas.Consistent with all previous potential anti-doping violations, additional information will be provided at the appropriate time as the process moves forward.Hunt (12-11-1) was furious following news of Lesnars first potential doping violation. Late last week, the 42-year-old demanded Lesnars entire paycheck in a social media post. Hunts reported purse was $700,000.Lesnar, a former NCAA wrestling champion and two-time defending UFC champion, had never tested positive for a banned substance before the June 28 out-of-competition test. The UFCs anti-doping program requires any retired fighter be subject to a four-month testing window prior to resuming competition; however, the UFC elected to waive that requirement for Lesnar, whose fight against Hunt was announced one month prior to UFC 200.According to the USADA website, Lesnar submitted eight total samples to the anti-doping agency. USADA official Ryan Madden previously confirmed to ESPN that Lesnar had submitted multiple test samples before June 28 and that each came back clean.When asked about performance-enhancing drugs during an international conference call earlier this month, Lesnar responded: Im a white boy and Im jacked. Deal with it.Pending a successful appeal to the July 9 test, Lesnars victory against Hunt will likely change to a no-contest. Following his successful return at UFC 200, Lesnar had not indicated whether he wished to fight again. Air Max 200 Pas Cher . 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"Im proud of the way Im playing just now, because I had to do a lot of work to get back to where I want to be," Murray said after celebrating with his teammates on the red clay court in a temporary stadium in left field of the downtown home of baseballs San Diego Padres. ARLINGTON, Texas -- Dak Prescott will likely have Tony Romo watching from the sideline in uniform for the first time as the backup to Dallas surprising rookie quarterback.Baltimores Joe Flacco will be an interested observer as well Sunday when the Ravens visit the Cowboys, eight years after he had a similar rookie rise from third-stringer to starter and playoff qualifier.Prescott doesnt have the Cowboys (8-1) in the postseason yet. But they can break the franchise season record with a ninth straight win, a streak that has vaulted Dallas to the best record in the NFL.Because of that success, Romo wont be the Dallas starter for the first time in 10 years now that the franchise leader in passing yards and touchdowns has recovered from a preseason back injury that gave Prescott the opportunity he seized. The 23-year-old said it wont be any different.Not for me, said Prescott, who was No. 3 in training camp before backup Kellen Moore broke an ankle in practice. I go in there and I worry about my game plan, just as I said -- whatever I can do to give this team a chance to win. Im sure Tony is going to be right there helping me, as hes done all year long.When the cameras arent on all three quarterbacks, theyll be on another Dallas rookie, running back Ezekiel Elliott. The NFL rushing leader with 1,005 yards is facing the leagues best rushing -- and overall -- defense. In October, Elliott faced the top rushing defense at the time in Green Bay and had a career-high 157 yards.The AFC North-leading Ravens (5-4) allow 71 yards per game. Elliott hasnt had that few since the opener, when he had 51 in Dallas only loss, 20-19 to the New York Giants. The Cowboys average a league-best 161 yards rushing per game.I think we are a lot more disciplined than teams they have played, Ravens defensive tackle Timmy Jernigan said. I am just putting it out there. I think we are more disciplined up front. It is going to be a different kind of challenge for them.Things to consider in the third straight game against an AFC North opponent for the Cowboys, who havent faced three straight opponents from the same division since 2007 against all three NFC East rivals:UNFAMILIAR SIGHT: Although he has missed 36 gaames with various injuries, Romo has never been the backup since Dallas coach Jason Garrett joined the staff as offensive coordinator in 2007.dddddddddddd That prompted a reporter to ask Garrett what he expects of Romo in an unfamiliar role. Prepare to play, Garrett said. Thats job No. 1. And obviously be a positive influence on our football team, which he will be.SMITH 1K: Baltimore receiver Steve Smith needs three catches to become the 14th player with at least 1,000 career receptions. The 16-year veteran was reminded this week of an offseason comment that he might drive straight home to Charlotte immediately after making his 1,000th catch. Not from Dallas. That is a long drive, he said. I would have to rent a car and all that stuff.BRINGING THE LUMBER: The overshadowed Dallas defense faltered late in a 35-30 win over Pittsburgh after steady improvement most of the season. But one thing stood out to the Ravens: Cowboys safety J.J. Wilcox and a number of punishing hits he delivered, especially to running backs. Just seeing all that, it is going to be a tough, physical game, and I think that we are built for it, Smith said.OFFENSIVE MOMENTUM: The Ravens are hoping to build on their 22-point second half in a 28-7 win over Cleveland. Baltimore is 25th in offense (Dallas is third), and Flacco has thrown as many interceptions as touchdown passes (9). You have to find a way to make that stuff continue to work and continue to get better at the stuff that made us go off there a little bit in the second half, Flacco said.RESPECT THE KICKERS: Dan Bailey of Dallas and Baltimores Justin Tucker rank 1-2 in NFL history for field goal accuracy. Tucker has made all 22 kicks this season, and Bailey is 17 for 19.Not that Smith cares. I would rather go to a circus, a carnival, a fair or even a medieval festival and watch cotton candy be made before I watch Justin Tucker and the other guy practice kicking, Smith joked.---For more NFL coverage: http://www.pro32.ap.org and http://www.twitter.com/AP-NFL---Follow Schuyler Dixon on Twitter at https://twitter.com/apschuyler ' ' '