TORONTO -- Ryan Hunter-Reay calls it a concrete canyon where an inch in either direction could mean the difference between extra speed or a crumpled car. Hunter-Reay took the checkered flag at the Honda Indy Toronto last year when just one race was more than enough. This years doubleheader means hell have to survive an entire weekend in the canyon. "Getting around this track feels like youve got your hair on fire the whole time," he said. "Its not smooth, its not precise, youre just absolutely standing on it and it does feel like youre driving like your hairs on fire." Hunter-Reay dominated the 85-lap, 1.75-mile race at Exhibition Place last year en route to eventually winning the IndyCar series championship. The 32-year-old American enters Saturday and Sundays races 23 points back of Brazils Helio Castroneves for the overall lead in the standings. A visit to Toronto will also help Hunter-Reay forget Sundays race at Pocono, where he was running strong until Japans Takuma Sato ran into him in pit lane. Hunter-Reay, who injured his thumb in the accident, is hoping to rebound with a strong qualifying performance that he calls critical to finishing Toronto intact. "The track breeds tight, close-quarters racing and with that sometimes comes contact and the tempers flare and people get impatient," said the Andretti Autosport driver. "So staying out front is usually the best bet." Drivers have already experienced one doubleheader this season at another street track. Hunter-Reay finished second in Race 1 at Detroit in June, but was 18th in the Race 2 after he clipped a curb and went into a wall. "Definitely unfortunate, such a simple mistake," he said. "That said, street course situation I was talking to you about where its such a fine line between hero and zero, man, youre always dancing on that edge asking for every little inch of the racetrack." New Zealands Scott Dixon had better luck in Detroits doubleheader. He finished fourth in both races, which he called "complete chaos." In the first race Dixon was taken out early and had to make his way back up through the field. In the second race, he struggled with bad tires. Dixon won in Pocono on Sunday, but hes never won in Toronto. "I guess some circuits you can have a fast car and maybe not get the strategy right and still win, whereas here you need to get everything right," said Dixon. The busy weekend starts with qualifying Friday for Race 1. On Saturday, drivers go through qualifying for Race 2 a few hours prior to the opening race. It all ends with Sundays race, after which Dixon expects hell need time to recover. A typical race leaves drivers exhausted, bruised and with an adrenalin rush that makes sleep difficult. A doubleheader demands drivers do it all over again the next day. "Its twice as hard, I think thats the easiest way of looking at it," said Dixon. "Its physically demanding, mentally demanding, preparing yourself in the mindset to know that youve got to do it again, trying to get sleep, its definitely an added dimension, thats for sure." If that wasnt enough, theres one more catch. Saturdays race will feature IndyCars first standing start since 2008. The start, which is used by Formula One, features cars beginning the race from a stationary position on the grid. Sundays race will revert to the normal rolling starts. Sato, one of the few drivers on the grid with F1 experience and practical knowledge of the standing start, said he isnt concerned about other drivers when Race 1 begins. But the cars themselves, and a narrow Turn 1, could be a problem. "Its all about reaction obviously," he said. "The reaction, it doesnt matter with the standing start or the rolling start. These guys have fantastic reaction for the restart all the time. So ... maybe some of the cars will suffer too much wheel spin, or some cars will struggle with bogging down, maybe some cars will stall (its) engine." The unique start is meant to add another reason for fans to return to an event that has been in recovery ever since it went on a one-year hiatus in 2008. Its too soon to know whether the doubleheader format helps or hurts ticket sales, and Hunter-Reay said hell wait for fan reaction before coming to his own verdict. Dixon pointed out the possibility that the second race might not be as dramatic for fans. "I think for me, I actually enjoy them," said Dixon. "I think if youre there, you might as well race. Im not sure whether it takes away from the big Sunday attraction of being the main race ... I think theres mixed feelings about it but for me just for racing and loving to race, yeah I love having multiple races on a weekend." Practically, the pair of races also offers plenty of points for drivers to move up a packed leaderboard. Castroneves, who has never won in Toronto, and fourth-place Dixon are separated by just 65 points. James Hinchcliffe of Oakville, Ont., who has the most victories of any driver so far with three, is also in the mix in fifth place. "It really is a big deal. Theres so many points on the board," said Hunter-Reay. "Youve got to be good here, youve got to be good in Houston with the double as well. So it really puts an emphasis on Toronto as an event. ... Youve got to be on your game. Were looking to do that." Just surviving the weekend isnt enough. Custom Titans Jersey China . Hey!" 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MIAMI -- The Heat are finalizing a flurry of weekend moves to restock the roster in the stinging aftermath of franchise icon Dwyane Wades free-agency departure to the Chicago Bulls.The Heat on Sunday reached a deal to re-sign veteran forward Udonis Haslem, according to a league source, and announced the signings of shooting guard Wayne Ellington and forward James Johnson.The Heat, a league source said, were also expected to match Brooklyns four-year, $50 million offer sheet to retain restricted free-agent guard Tyler Johnson. Miami faced a Sunday-night deadline for deciding on Johnson.On Friday, the Heat signed former New York Knicks forward Derrick Williams.The Miami Herald was first to report Haslems one-year, $4 million deal to stay in Miami, where he is the only remaining player who played in all three of the Heats championship seasons. The signings exhaust nearly all of the $20 million in cap space the Heat had after re-signing center Hassan Whiteside to a four-year, $98 million deal July 1 in the opening hours of free agency.Of the weekend signings, only Johnsons deal is for longer than two seasons under team president Pat Rileys plan to maintain flexibility in hopes of attracting a marquee free agent nexxt summer to speed up the rebuilding process.ddddddddddddThe activity came on the heels of Wades decision Wednesday to turn down Miamis two-year, $41.5 million offer after a second straight summer of acrimonious negotiations with the Heat. Riley had hoped to use the remaining $20 million for Wades salary next season.Wade instead agreed to a two-year, $47 million deal with the Bulls and confirmed Saturday that a rift with Riley during the process factored into his decision to walk away.The 34-year-old Wade spent his first 13 seasons in Miami, is the franchises career leader in scoring and helped lead the Heat to five NBA Finals appearances and three championships. Riley has not spoken publicly since Wades departure.Sometimes, change is good for both sides, Wade said Saturday during his youth basketball camp in Miami. Im not sitting here saying that change will not be good for the Miami Heat. We might not see it immediately. We might see it later.Also, the Heat have sent a future second-round pick and cash to the New Orleans Pelicans in exchange for veteran power forward Luke Babbitt. ' ' '