NORMAN, Okla. -- Oklahoma quarterback Baker Mayfield might have played his way back into the Heisman Trophy conversation.Baylor quarterback Seth Russell appears to be lost for the season.Mayfield passed for 300 yards and two touchdowns and ran for another score to help No. 9 Oklahoma defeat No. 25 Baylor 45-24 on Saturday in a game marred by Russells injury. A season that is fading quickly for Baylor got much worse when Russell severely dislocated his left ankle and was carted off the field with 5:48 left in the third quarter.The good news is that I think hell heal up just fine, but the bad news is that I dont think hell get back this year, Acting Baylor coach Jim Grobe said.Russell missed much of last season with a broken bone in his neck.What he went through last year, to come all the way back here to compete and just getting hurt again -- prayers out for him, backup quarterback Zach Smith said.Baylor (6-3, 3-3) had hoped to bounce back after last weeks 62-22 loss to TCU. Instead, the Bears are on their first 3-game losing streak since the middle of the 2012 season. Russell passed for 148 yards and ran for 70 before getting injured, but he threw two interceptions and lost a fumble.Mayfield got off to a rough start this season in losses to Houston and Ohio State, but he has bounced back and led the Sooners to seven straight wins. Oklahoma coach Bob Stoops said Mayfield is playing better than a year ago, when he finished fourth in the Heisman balloting. He said Mayfield has improved as he has become more comfortable with offensive coordinator Lincoln Rileys system and receiver Dede Westbrook. Mayfield has 26 touchdown passes and just five interceptions in league play.Why wouldnt you expect him with another year to be better, Stoops said. Do we expect? Yes, we do. And watching him from a year ago, having a full year under his belt with coach Riley and these other receivers, and the emergence of Dede -- yes, we expect him to be looking like this.The Sooners won their 15th straight in Big 12 play. Joe Mixon had 187 yards from scrimmage and Samaje Perine ran for 100 yards and two touchdowns after missing three games with a pulled muscle in his right leg for Oklahoma (8-2, 7-0 Big 12, No. 11 CFP).THE TAKEAWAYBaylor: The Bears collapse began with a loss to Texas, got much worse against TCU, and now, things look bleak with Russell out. Smith, a freshman, stepped in to complete 6 of 15 passes for 144 yards and a touchdown Saturday.Oklahoma: Oklahomas defense was solid for the third straight week after giving up 59 points and 854 yards against Texas Tech. The Sooners gave up three points against Kansas, then 24 against Iowa State the next game. Baylor gained 504 yards, but Oklahomas defense forced three critical turnovers.Linebacker Jordan Evans led the way with two sacks and two interceptions.Jordan, he has to play good in the middle of our defense for us to be successful, Oklahoma defensive coordinator Mike Stoops said. He knows that, and hes really come on when we needed it most.POLL IMPLICATIONSBaylor: The Bears school-record streak of 60 consecutive AP poll appearances, which Baylor says is the fourth-longest active streak in FBS, will likely end.Oklahoma: The Sooners, who were unranked heading into Big 12 play, could move higher in the AP Top 10 and position themselves to move into the College Football Playoff picture. Oklahoma was 12th in the AP poll at the same point last year.UP NEXTBaylor hosts Kansas State next Saturday.Oklahoma travels to West Virginia next Saturday. The game against the 11th-ranked Mountaineers (No. 16 CFP) provides the Sooners a chance to prove themselves against a high quality opponent.Always a challenge, Bob Stoops said. An exciting challenge. Theyve always got a raucous, rowdy crowd at West Virginia. Its a challenging place to go play.---More AP college football: www.collegefootball.ap.org---Follow Cliff Brunt on Twitter: http://www.twitter.com/CliffBruntAP . Wholesale Yeezy Shoes . Clarkson had been dealing with an elbow injury in early January and will be out of action for at least one week. He has three goals and five assists through 36 games with the Leafs this season. Discount Yeezy Shop . Brad Jacobs and his Sault Ste. Marie, Ont., team took control of the game early. http://www.wholesaleyeezy.com/ . While hell be dialed in to that tournament on a course he loves, you can forgive him if his eyes glance down the calendar just a bit, towards April. Authentic Yeezy Outlet . A forerunning sled crashed into the worker Thursday at the Sanki Sliding Center. The unidentified worker broke both legs and was airlifted to a nearby hospital. Wholesale Yeezy Boost . - Oakland Raiders running back Rashad Jennings was speaking to a group of local high school students earlier this week when the conversation turned to the importance of being prepared when opportunities in life arise. BEREA, Ohio -- When Josh McCown was asked by Browns wide receivers Terrelle Pryor and Josh Gordon -- players who are much younger than him -- to join them and watch Monday Night Football, Clevelands quarterback didnt pass up the chance.When the invite is there, I will go hang, McCown said.The curious trio of teammates will be huddling again Sunday.McCown, who stayed steady this summer as trade speculation swirled, will replace an injured Robert Griffin III and start Sundays home opener against Baltimore. Griffin broke a bone in his left shoulder last week in Philadelphia and will miss at least eight games.So the Browns (0-1) will turn their offense back over to the capable McCown, whose future in Cleveland seemed tenuous for several months. However, despite fielding several offers for the 37-year-old, the Browns chose to hang on to McCown, a decision that looks shrewder after Griffin went down.Josh is a pros pro, said Pro Bowl tackle Joe Thomas. You dont survive 15 years in the NFL without knowing how to take care of your business, even in the face of adversity.McCown is relishing another chance, knowing better than anyone he doesnt have many left. His first season with Cleveland was sabotaged by injury, and time is running out on a career that began in 2002 -- when many of his current teammates were still in grade school.For my age, these opportunities, I dont take them lightly, he said. The opportunity to get out there, certainly when that is taken away, it eats at you. Throughout the offseason, it is always in the back of your mind, and the next opportunity you have to make the most of it because you do not know. That is my plan this time around.McCown experienced extreme highs and lows last season against the Ravens (1-0). He passed for a team-record 457 yards and led the Browns to one of their three wins, a 33-30 overtime thriller at Baltimore on Oct. 11. When the teams met again six weeks later, McCown broke his collarbone and missed the final five games.When Cleveland signed RG3 as a free agent in March and then selected rookie Cody Kessler in the third round of Aprils draft, it appeared McCowns days with the Browns were numbered. He blocked out the trade rumors and did what he has always done: whatever the team needed.Even before he was beaten out by Griffin for the Browns sstarting job in training camp, McCown selflessly stepped aside and offered his snaps so RG3 could have more time with the starters.ddddddddddddts that selflessness that has endeared him to teammates past and present. And its why the Browns, who have 17 rookies on their roster, are grateful to have him to teach their young players, to lead them, and, to hopefully win with them.Im full speed ahead with Josh, coach Hue Jackson said. I think he will go out and play extremely well, and help lead our offense and get us to playing football the way we need to play, and give us an opportunity. We expect him to do that. That is why we kept him here.For all the positive testimonials about McCowns character, theres no escaping that hes just 2-17 in his last two seasons as a starter for Tampa Bay and Cleveland. Although he was on the way to his best statistical season in 2015, McCown was 1-7 for the Browns.Pryor, the QB-turned-wide receiver who spent part of the offseason working out with McCown, said focusing on McCowns record is unfair. Theres more than meets the eye.Last year, he lit a lot of teams up, Pryor said. The guy knows how to play. What we love about Josh is that hes the ultimate competitor. You can see it in his eyes and the way he talks in the huddle.McCown was with Pryor and Gordon, who is serving another four-game drug suspension, when Browns owner Jimmy Haslam called to discuss Griffins injury and offer him support.Which made me feel good for a lot of different reasons, Haslam said. Josh McCown is as good a person as Ive ever met anywhere. Hes just incredible.McCown never thought twice about whether his being with much younger teammates appeared odd.It is good to be around those guys, he said. It keeps me young. Ive been the `old guy for the past five years.Game notes Jackson said he doesnt have a problem with his players celebrating following a big play, as long as they keep it within reason. I want our guys to have a little swagger to them, he said. If that is what makes us play good, more power to them. As long as the dances dont turn into something Ive never seen before, we will be OK.---AP NFL website: www.pro32.ap.org and www.twitter.com/AP-NFL ' ' '