Things to watch in the Big 12 in Week 5, the first full weekend of conference play, which got an early start with Kansas playing at Texas Tech on Thursday night:GAME OF THE WEEKOklahoma (1-2) at No. 21 TCU (3-1, 1-0 Big 12). While two September losses have already eliminated any realistic chance for Oklahoma to return to the College Ftball Playoff for the second year in a row, the Sners have a clean slate in the Big 12 -- they were the overwhelming preseason favorite to win their 10th title in the league. This game features two former transfer quarterbacks: Oklahoma second-year starter Baker Mayfield (from Texas Tech) and first-year TCU starter Kenny Hill (from Texas A&M). Oklahoma has a 3-1 advantage in its Big 12 matchups against the Horned Frogs, but the total combined margin in those games is 15 points.BEST MATCHUPOK, most interesting matchup to watch. Texas defense vs. Oklahoma State offense. The 22nd-ranked Longhorns (2-1) will quickly find out the effectiveness of changes made on defense during the open date after giving up 50 points and 396 yards passing in a loss at California . James Washington leads the Big 12 with 122 yards receiving a game, while the Cowboys pass for 340 yards a game. Texas has allowed a Big 12 high-matching nine TDs passing without an interception.INSIDE THE NUMBERSKansas State is 5-0 against West Virginia since the Mountaineers joined the Big 12 Conference. ... Three TCU defensive linemen (Aaron Curry, L.J. Collier and Tipa Galeai) have 2 1/2 sacks each, matching them with Baylor end K.J. Smith for the Big 12 lead. ... Oklahoma hasnt lost back-to-back games since October 1999 in coach Bob Stps first season. ... Texas Tech QB Patrick Mahomes has 1,493 yards passing in three games, a total not reached that quickly by any quarterback nationally since at least 2000.LONG SHOTAny Big 12 team getting through conference play without a loss . Since the Big 12 became a 10-team league in 2011, there has not been an undefeated champion -- each one has had an 8-1 league mark, with two teams sharing the title with that record in 2012 and 2014. Only Baylor and West Virginia went undefeated in nonconference play this month -- the fewest for the Big 12 as a 10-team league, after seven teams were without a loss in nonconference play last year.IMPACT PERFORMERBaylor senior linebacker Aiavion Edwards, who had 17 tackles in the Russell Athletic Bowl last December, goes into Saturdays game at Iowa State leading the Bears this season with 33 tackles (8.2 per game, second in the Big 12), including 22 solo stops. He had 12 tackles last week against Oklahoma State. He has also squatted 710 pounds, the highest on Baylors team.---Compiled by AP Sports Writer Stephen Hawkins in Fort Worth, Texas.---AP College Ftball website: tball.ap.org" target="_blank">www.collegeftball.ap.org kiestore.com/Texans-Arian-Foster-Jersey/" target="_blank">Arian Foster Texans Jersey . PETERSBURG, Fla. kiestore.com/Texans-Justin-Reid-Jersey/" target="_blank">Justin Reid Texans Jersey . -- For the first time in two months, an opponent was standing up to Alabama. kiestore.com/Texans-Justin-Reid-Jersey/" target="_blank">http://www.texansrkiestore.com/Texans-Justin-Reid-Jersey/ . The incident occurred at 19:56 of the second period of the Kings 4-2 road win over Edmonton on Sunday. Nolan punched Oilers forward Jesse Joensuu in the jaw in front of the Kings goal during a scrum. kiestore.com/Texans-Kahale-Warring-Jersey/" target="_blank">Kahale Warring Jersey . -- Five former Kansas City Chiefs players who were on the team between 1987 and 1993 filed a lawsuit Tuesday claiming the team hid and even lied about the risks of head injuries during that time period when there was no collective bargaining agreement in place in the NFL. kiestore.com/Customized/" target="_blank">Custom Houston Texans Jerseys .com) - The Pittsburgh Penguins placed forward James Neal on injured reserve Tuesday.Multiple Group One winner Cirrus Des Aigles has been retired by trainer Corine Barande-Barbe after a ligament problem in a leg was discovered. Though the 10-year-old gelding is sound, following X-rays the Chantilly handler felt it was not worth the risk putting the horse under maximum pressure in a race.He has been in great condition and very well, but I found that in his work for racing he was holding himself back a little so we checked his legs, she told Press Association Sport. We couldnt see anything so we tk X-rays and found a little calcification in a ligament that could be dangerous if he put in 100 per cent. In a race, it could break.We decided with the owner not to take such a risk and put the horse in danger, so we have decided to retire him while he is sound and happy.She went on: He doesnt suffer. He can trot, he can gallop, but we dont want him to go to his maximum as it would be dangerous.He will stay with me for at least two months. We have to wind him down as he was working to go racing.He will do something with Christophe Soumillon (jockey) when he retires. He wants to be a part of the horses retirement. Sky Racing Tickets Fast, secure racing tickets: Exclusive racing offers near you Cirrus Des Aigles won seven Group Ones contests - and 17 Group races in all - among 22 successes in 67 races in six years, earning his connections over £6.dddddddddddd.1million in prize money.His constitution and appetite for racing was such that he competed not only in his native France, but also Britain, Ireland, Japan, Dubai and Hong Kong.As a gelding he was prevented from running in the Prix de lArc de Triomphe, but landed the Champion Stakes at Ascot in 2011 and got within two lengths of the mighty Frankel the following year.Barande-Barbes superstar won the Dubai Sheema Classic in 2012 and the Coronation Cup in 2014, and his three victories in the Prix Ganay included a triumph over the great mare Treve.Picking out three highlights of his amazing career, Barande-Barbe said: Maybe his first Group One at Ascot and when he beat Treve in France and when he won on that magic night in Dubai.He did so much. 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