TUCSON, Ariz. -- Arizona exhausted the helium from its surprising and soaring run to the 2014 Pac-12 South title -- and the descent might not be over.The Wildcats are 9-9 since winning the South, including a Fiesta Bowl loss to Boise State. This season, Arizona is 2-2 as it takes an injury-plagued team into Saturday nights game against UCLA at the Rose Bowl.By the end of last weeks 35-28 overtime loss to Washington, Arizona was down to its second-string quarterback, a fourth-string running back and was playing without defensive starters at nose guard, outside linebacker and safety. As of Wednesday, there was no word if any of the No. 1s would be back this week, or anytime soon.There is still too much of a gap at certain positions between the No. 1 and No. 2, coach Rich Rodriguez said. Thats our job in recruiting, to close that gap.Rodriguez has struggled against UCLA, going 0-4 against the Bruins while losing by a combined score of 170-73. UCLA is 2-2 this season, both of its losses coming against top 10 teams, Texas A&M and Stanford.The schedule stays unfriendly for Arizona. Games at No. 18 Utah, vs. USC, vs. No. 7 Stanford and at Washington State follow this weeks game.The long-term silver lining is that the Wildcats appear to have found a dynamic young quarterback in redshirt sophomore Brandon Dawkins. He took over in the second game for two-year starter Anu Solomon, who suffered a knee injury in practice after a season-opening 18-16 loss to BYU.Dawkins accounted for a 56-yard run, a 79-yard touchdown run and a 54-yard pass against Washington. He trails only Louisvilles Lamar Jackson nationally in quarterback rushing with 391 yards.Hes hard to defend, because you get him defended and he can still make plays, Washington coach Chris Petersen said Monday during his weekly press conference. You think you have angles on him, and he can outrun angles. ... Hes a problem. Theres no doubt.Dawkins has been solid in the passing game, completing 50 of 81 passes for 625 yards, with three touchdowns and one interception, but hes in danger of becoming a one-man show.Starting running back Nick Wilson has missed all but one series of the past two games because of an ankle injury. Orlando Bradford was dismissed after his arrest in a domestic violence case.And third-string running back J.J. Taylor, a freshman who ran for 168 yards against Grambling State, suffered a broken left ankle late in the third quarter against Washington.J.J. was beginning to show everyone how special he is, Rodriguez said. We had a lot of plans for our two-tailback sets. Those plans change somewhat. Injuries happen. You dont want it to all hit at the same position, but it happens. Right now, it stings.The Wildcats are also in the midst of a defensive reboot. Rodriguezs four-man defensive coaching staff is all new, led by coordinator Marcel Yates, who previously held the same position at Boise State.Early results have been mixed.Yates more aggressive scheme has contributed to nine takeaways in four games but the defense is having a hard time getting off the field, ranking 122 out of 128 teams by allowing opponents to convert 50.9 percent of their third-down chances (29 of 57).Theyre a scrappy bunch, Rodriguez said. We still need to do a lot better job of creating three-and-outs. Thats been the most frustrating thing, particularly when were trying to control the tempo and the pace. Dylan DeMelo Jersey .C. - The Carolina Hurricanes have placed backup goalie Anton Khudobin on injured reserve with an unspecified lower-body injury. 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Jefferson has been charged with assaulting his girlfriend.MONTREAL -- Nico Rosberg is the one a roll, but its Mercedes AGM teammate Lewis Hamilton who may have the upper hand at the always unpredictable Canadian Grand Prix. The son of 1982 world champion Keke Rosberg has won the pole position at the last three races on the Formula One calendar and is coming off a victory at the Monaco Grand Prix two weeks ago. But the quick and difficult Circuit Gilles-Villeneuve has become Hamiltons track, having won there three times in his career, including last year. "I enjoy this track and Im confident coming here," Rosberg said Thursday. "Qualifying will be exciting and important. "Maybe a little less important (than at Monaco) because you can overtake, and tire degradation is going to be an issue, so theres going to be a lot happening in the race. But, as at all tracks, its always a big challenge to try to be ahead of Lewis in qualifying because hes very quick." And he likes his chances to claim a fourth straight pole. "Our car has been the quickest in qualifying for quite some time now," he said. "We just have a very fast car. "Im confident Ill be quite far up the grid in qualifying here." Hamilton jumped from McLaren Mercedes to Mercedes AGM this year and has yet to win in six races this season, although he has been in the top-5 five times. Sebastian Vettel leads the drivers championship and is on course for a fourth straight F1 title, but the Red Bull cars have been less dominant this year against Kimi Raikkonens Lotus, Fernando Alonsos Ferrari and the Mercedes. And Vettel has yet to win the Canadian Grand Prix, although he was second to Jenson Button in 2011 and fourth in 2010 and 2012. The McLaren team has won the last three times. The 4.361-kilometre track is especially punishing on brakes with its long straightawayys leading to tight turns, including a hairpin.dddddddddddd It is also tough on tires, an issue that has Mercedes in the midst of controversy. The team has been called to a hearing with the international tribunal of FIA, the sports governing body, to answer questions about a possibly illegal tire test after the Spanish Grand Prix last month. If found in violation of rules barring unauthorized in-season testing the team could be fined or even banned from the constructors championship. The Red Bull and Ferrari teams complained that Mercedes gained an unfair advantage by running 1,000 kilometres over three days on a new, more durable tire that Pirelli will introduce this week. Teams were concerned with tires breaking down during races, so Pirelli came up with a stronger version. It will be available for use only during practice on Friday at the Canadian race but is expected to be in full use for the British Grand Prix on June 30. Rain is forecast for Friday, which would restrict use of the new tires, and for qualifying on Saturday. Skies are expected to clear up for the race on Sunday. Vettel blasted Mercedes in the German media this week, saying "every kilometre (of testing) is an advantage." Also at issue was that Mercedes used their 2013 car. Some tests by Ferrari in their 2011 car this year were allowed. And they used their F1 starters, rather than reserve driver Sam Bird. "That was what the team decided," said Rosberg. "I think also for Pirelli its better if were in the car because Sam doesnt drive much and for sure he wont be able to go on our pace and bring the Pirellis through the laps exactly as we would." The Mercedes team issued a statement this week saying it "welcomes the opportunity to explain the full facts" of the tests to the tribunal. 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