TEMPE, Ariz. -- As Arizona Cardinals first-round pick Robert Nkemdiche enters the final six weeks of his rookie season, he has proved to possess the talent to play in the NFL.Its the mental fortitude that has been lacking, according to Cardinals coach Bruce Arians.Talent [is] not an issue, Arians said Wednesday. Maturity is. And its just maturing.This is the second straight season the Cardinals have had maturity issues with their first-round draft choice.Last season, it was with tackle D.J. Humphries, who didnt play at all as a rookie,?partially because of his lack of maturity.?On Nov. 8, Arians said the adjustments to being a professional that Nkemdiche had been experiencing were very similar to what Humphries went through last season.But on Wednesday, Arians said he cant compare Nkemdiche to Humphries anymore. No, D.J. worked harder, Arians said.One of Nkemdiches most recent incidents that magnified his immaturity came after Sundays loss to the?Minnesota Vikings?in Minneapolis.He was wearing a T-shirt under his suit, instead of a buttoned-down shirt and tie -- the standard dress code for a trip home after a road loss -- and Arians reportedly had a few choice words for the rookie about his outfit. Nkemdiche proceeded to find a tie but had to ask a teammate to tie it for him, then he wore it over a T-shirt. He reportedly later was given a dress shirt to meet the teams dress code.Nkemdiches issues this season began the week before training camp, when an ankle sprain sidelined him for most of training camp. And they have just continued.In mid-October, Arians graded Nkemdiches season as a C. He criticized Nkemdiche for being overaggressive.You dont have to be Superman just because youre a first-round pick, Arians said then. You dont have to go out there and get all crazy and get out of your gap. Just do your job.In early November, Arians said Nkemdiche was still learning the sense of urgency at this level, citing Nkemdiches actions in meetings, the weight room, on the field and with assignments.He just needs a little more of a sense of urgency, Arians said.nike vapormax skroutz γυναικεια . - Baltimore Ravens quarterback Joe Flacco is not a fan of his teams use of the wildcat formation, saying "it makes you look like a high school offence. Nike Air Vapormax Flyknit Skroutz . Self was acquired from the Buffalo Bandits in a trade for Alex Hill midway through last season, and made his debut in Rochester on March 16, 2013. http://www.vapormaxgreece.com/ . "I wrote 36 on my sheet at the beginning of the game," the Cincinnati coach said, referring the yard line the ball would need to be snapped from. Nike Vapormax 2019 Greece . "I wrote 36 on my sheet at the beginning of the game," the Cincinnati coach said, referring the yard line the ball would need to be snapped from. nike vapormax greece . Laudrup revealed Thursday he was notified of his dismissal in "the briefest of letters which gave no reasons why such hasty and final action was deemed necessary.Oklahoma will learn quickly whether it has what it takes to return to the College Football Playoff.The Sooners made a surprising run to win the Big 12 title last season before losing to Clemson in the national semifinals. Now, with much of the key talent returning from that 11-2 squad, Oklahoma is poised to finish the job.The Sooners will be tested immediately when they open with Houston at Reliant Stadium on Sept. 3. Two weeks later, they will host Ohio State in one of the seasons biggest games.Theres two of the teams in the top 12-13 in the country, and deservedly so, Oklahoma coach Bob Stoops said of Houston and Ohio State. Excellent football teams.In conference play, the Sooners will play at TCU on Oct. 1, then will play Texas in Dallas the following week. If the Sooners can get past the second weekend of October unscathed, theyll be in position to have some margin for error if they fall later in the season.Our season, the front part of it is very loaded up, quarterback Baker Mayfield said. We have been preparing to be ready for the season at the very beginning. We cant have any rust to knock off. We have to go in ready to play, and thats how were treating camp right now.Here are some things to watch for this season.HEISMAN HYPE: Mayfield, one of the nations most exciting and innovative players, finished fourth in the Heisman Trophy balloting last season after passing for 3,700 yards and 36 touchdowns.He is still striving for improvement.My work ethic has been the same, if not even harder, he said. Ive been pushing myself and I need those guys to see that, because if they were to see me taking a day off or just saying, `Oh, Ive got it figured out, that wouldnt be good for the program. So Ive been working hard and thats how I expect the other guys tto do it, too.ddddddddddddREPLACING STRIKER: Eric Striker was one of Oklahomas all-time leaders in sacks from the outside linebacker slot, but hes now in the NFL. Ogbonnia Okoronkwo, a 6-foot-2, 245-pound redshirt junior, is in line to fill the void.He is getting his opportunity, defensive coordinator Mike Stoops said. Hes played in certain situations the last two years. Hes very fast and explosive. Great rusher.RECEIVING THREATS: Sterling Shepard, one of the schools top three all-time receivers in most categories, has gone to the NFL.Dede Westbrook, last years No. 2 receiver, had 46 catches for 743 yards last season. Mark Andrews, an All-Big 12 selection last season, had 19 grabs, but seven touchdowns. They are the most likely players to receive an uptick in targets. Geno Lewis, a transfer from Penn State, should be a factor.JOE MIXON: The explosive running back burst onto the scene last season with 1,119 all-purpose yards last season. He was one of the conferences top all-around threats, and now that Shepard is gone, hell be expected to do more as a playmaker. Bob Stoops said Mixon could have a bigger role in the passing game.LINCOLN RILEY: The 32-year-old offensive coordinator was given a huge raise in the offseason for helping to make the Sooners one of the nations most productive and balanced offenses. Oklahoma struggled out of the gate last season as the team got used to his version of the Air Raid. Now, the Sooners are comfortable, and Riley has had time to tinker.SEASON OPENER: Sept. 3 vs. Houston at Reliant Stadium.PREDICTION: 12-0 regular season, Big 12 champion.---Follow Cliff Brunt on Twitter (at)CliffBruntAP . ' ' '