CALGARY -- The Calgary Stampeders quarterback carousel has turned again, stopping on backup Kevin Glenn as the starter for Fridays game against the undefeated Saskatchewan Roughriders. The Stampeders (4-1) emerged from their bye week with the expectation Drew Tate had overcome a strained right forearm that sidelined him for two games. But Tates arm flared up again after practice earlier this week. Glenn will start against the Riders (5-0) with Bo Levi Mitchell his backup at McMahon Stadium. Tate left in the fourth quarter of a 36-21 road loss to Saskatchewan on July 6. He was subsequently diagnosed with a strained forearm muscle and hasnt played since although his latest setback has been called an elbow injury. "Hell probably be not throwing for five, six, seven days," Calgary head coach/GM John Hufnagel said Wednesday. "It depends on how it responds to injections." Tates string of injuries extends back to the second game of last season when he separated his shoulder. He returned later in the year but broke a bone in his arm in a playoff game. The 28-year-old Texan hasnt been able to get a sustained run of starts since Hufnagel declared him the starter prior to last season. Glenn, 34, did admirable work to get Calgary to last seasons Grey Cup game. But the emergence of Mitchell this year has further crowded the quarterback situation. Mitchell finished a come-from-behind win against Montreal on July 20 when Glenn suffered a right elbow injury. Mitchell, 23, of Katy, Texas, then went the distance in a 37-24 victory over Winnipeg on July 27. He threw for 376 yards and three TDs and was named the CFLs offensive player of the week. "You always expect to go out and play great," Mitchell said. "Thats always the mindset. "Sometimes that doesnt happen. Fortunately for me last time it did. Obviously its going to help your confidence." Glenn admits Calgary has a unique quarterback situation. "The biggest thing about the situation is all three guys have played," he acknowledged. "You dont usually get a situation where that has happened. "Its usually the first-string guy goes down, the second-string guy plays and then it gives the No. 1 guy time to recover and he comes back to his starting spot. "That No. 3 guy, Ive been in that situation before where you really had to, I dont want to say pray because youre praying for somebody else to get hurt, but you really had to go through some stuff to actually get onto the field." Glenn had four touchdown passes in a 41-38 win and another two in a 17-10 victory against Saskatchewan last season. Glenn said his arm is healthy and hes looking forward to facing the CFLs only unbeaten team. "Its a team that beat us last time out and its the only loss we have this year, so theres a lot of added incentive," he said. "Ive got some good relationships with guys on that team, so it would be good to have bragging rights. "This is a team that nobody has been able to beat so far and theyre coming into our house and we have a very good opportunity to beat them. All that plays a part in the preparation and taking advantage of the opportunity." Despite having had three different starters, Calgarys offence is averaging a solid 32.4 points per game, second only to Saskatchewan (36.6). The unit is also third in TDs with 16, behind the Riders (19) and Toronto Argonauts (18). "Weve managed to win football games," Hufnagel said. "The quarterbacks have taken care of the football, weve been able to get first downs. "Theyve done a good job managing the game . . . and the receivers and the offensive line are tuned into the quarterback thats on the field. Thats important because everyone has a little bit of a different snap count and timing of the cadence and how the plays are called in the huddle and things like that." Calgary kicker Rene Paredes has also been automatic, having made a CFL-record 34 straight field goals dating back to last year. Hes also leading the league in scoring with 62 points, having accounted for more than a third of 162 points the Stampeders have scored so far. Tate was scheduled to be examined by doctors Wednesday and wasnt sure if his present situation was related to the forearm strain or something new. "I dont know really," he said. "I think I got misdiagnosed to be honest with you. "Well find out. Were going to find out (Wednesday), I think, what it is." Custom Dallas Cowboys Jerseys . In taking its goal tally to 99 in all competitions already this season, City delivered another demonstration of its lethal firepower at Etihad Stadium to set up a fourth-round match at home to another second-tier team -- Watford. Cheap Custom Jerseys China . Pirlo limped out of Sundays 1-0 win over Udinese after just 13 minutes. Juventus says Pirlo underwent tests on Monday which revealed he has "a second-degree lesion to the collateral medial ligament in his right knee. http://www.jerseyscustom.us/ . LOUIS -- Valtteri Filppula assisted on three of Tampa Bays four goals, and the Lightning beat the St. Wholesale Custom Jerseys . -- Nate Robinson has played for seven teams, so beating one of them is no longer a rare occurrence. Wholesale Custom Jerseys Authentic . -- Stanford squashed Oregons national championship hopes again, schooling the Ducks in power football. TALLADEGA, Ala. -- About the only change to NASCAR Sprint Cup cars since their last trip to Talladega Superspeedway is the addition of 20 pounds.The addition of the weight, theoretically, could have a small -- very small -- impact on whether a 3,300-pound stock car gets airborne, one of the concerns of drivers as they left the track in May. The changes arent made to keep the cars on the ground but to protect the drivers who hit the wall.The weight is part of a new construction of the footbox area, which includes a new design plus foam and is meant to protect a drivers lower extremities. Kyle Busch missed 11 races when he broke his right leg and left foot in an Xfinity Series accident at Daytona in 2015.The new floorboard chassis requirements go into effect in 2017 for restrictor-plate tracks and 2018 for all tracks. Teams have the option to use it at Talladega this weekend. The four Joe Gibbs Racing cars, the Furniture Row Racing car and the Roush Fenway Racing car of Ricky Stenhouse Jr. are among the cars with the changes.It would make sense that drivers are very aware of whether they have the added protection in their cars for the race Sunday. But at least some drivers mired in Chase cutoff drama didnt know.Carl Edwards appeared puzzled when asked about it after practice Friday.We focused 100 percent on Kansas and then [on the test this week at] Homestead and now Talladega and so, yeah, Im not up to speed on it, Edwards said. I should be.There was one superspeedway race -- I believe it was here -- where I actually ran into a car that was pulling off of pit road and I hit that car so hard and went up in the air that looking at it afterwards, seeing what could have possibly happened with that foot box, Im really excited to have more shielding there.Joey Logano didnt know whether his car had the new components. He does not.I focus on things that I can affect and things that involve me, Logano said. Yes, you can make an argument that involves me quite a bit, but it doesnt have an effect on the way Im going to approach this race ... so I didnt really get in the middle of that.Martin Truex Jr. and Denny Hamlin were aware their cars had the changes. They couldnt tell the difference when driving. Hamlin conceded he only knew because there was some talk about it at the drivers council meeting last week at Kansas.ddddddddddddWere focused on doing everything inside the car to go faster, Hamlin said. I didnt notice any difference. ... Hopefully I wont see the difference because I wont be hitting anything on Sunday.That is typical driver talk. They try not to think about the dangers until it, literally, hits them.You cant tell any difference unless you get under there and really look at it, Truex said. Everything is fine from what I can see and obviously the weight is not a big deal here either.Hopefully we wont have to test the safety features of that new panel, but glad to know its in there for sure.The weight is the main concern of teams, who wouldnt even think about using the new construction -- it has to be certified by NASCAR because it is so different from the 2016 chassis -- until NASCAR mandated that all cars at Talladega must have the extra 20 pounds for the cars that are running the 2016 package. Where the weight is located in the footbox area, though, is different from where teams would put the weight in the 2016 chassis. At other tracks where weight distribution is more important, teams cant afford to make the change and be at a competitive disadvantage.Among other safety improvements NASCAR will implement next year: All drivers will have roof hatches in their cars for 2017 restrictor-plate races. And the size of the holes in the restrictor plate will change by 1/64th of an inch. There will also be a change to the steering column so that it wont come back into the drivers lap as forcefully as in recent crashes such as Danica Patricks at Talladega in May.It makes us feel a lot better in the cars to know they go in that direction, said Tony Stewart, whose car does not have the changes. Its a lot of weight theyre adding to the car, but Id rather have safety than weight [savings].Will the weight help cars from getting airborne?Its not going to hurt it, keeping it down for sure, but ... Im fairly certain that they can already pick them up [in the air] with 3,300 pounds; 20 probably isnt going to be a big deal, Stewart said. ' ' '