LAS VEGAS -- UFC interim light heavyweight champion Jon Jones has been notified of a potential doping violation, ruling him out of his bout with Daniel Cormier in the main event of UFC 200.UFC President Dana White announced the dramatic change Wednesday night, three days before the mixed martial arts promotions landmark show.Jones tested positive for a banned substance in an out-of-competition sample taken June 16 by USADA, which administers the UFCs anti-drug policy.Jones is considered the top pound-for-pound fighter in MMA, but he has failed drug tests around two of his past three scheduled fights. He tested positive for apparent cocaine use before his first fight with Cormier at UFC 182 in January 2015.Jones served a suspension for much of 2015 after his involvement in a hit-and-run accident.Andrija Novakovich Jersey . SIMONS ISLAND, Ga. Andrija Novakovich USA Jersey . -- Cam Newton pranced into the end zone, placed his hands over his chest and did his familiar Superman pose. http://www.usasoccerauthority.com/chris-wondolowski-usa-jersey/ . The No. 1-ranked Nadal tweaked his back warming up for the Australian Open final, which he lost almost four weeks ago in a major upset against Stanislas Wawrinka. His first stop after the layoff is the clay in Rio as he tests the back and tries to stay healthy for the French Open in three months. Bobby Wood Jersey . The International Olympic Committee released the official list of bid cities on Friday after the deadline for applications had passed. The candidates -- all previously announced in their own countries -- are: Almaty, Kazakhstan; Beijing; Krakow, Poland; Lviv, Ukraine; Oslo, Norway; and Stockholm. Zack Steffen Jersey . If ever they start actually putting pictures beside words in the dictionary, the Blue Jays left-handers mug will appear beside “Consistency.Collingwood coach Nathan Buckley isnt ruling out the finals just yet.But he says the Magpies season hinges on this Friday nights fixture against North Melbourne.The Kangaroos are clinging to eighth spot, two wins clear of Port Adelaide, with Collingwood three wins outside the eight.We will get to Etihad (Stadium), both on a side-day break, Buckley said after a 28-point away loss to Adelaide on Saturday night.Their season is on the line. And we still consider our season is on the line.We still want to play the footy that were capable of as often as we possibly can.Buckley said the Magpies will need to rectify a glaring issue when confronting the Kangaroos: slow starts.dddddddddddd.Collingwood conceded the initial five goals of the game against the Crows, a week after being four goals down at quarter-time against Greater Western Sydney.We will go to the North game with a full intent, he said.We have started slow the last two weeks so clearly we need to start better - you cant afford to give good sides a start.We were able to chase down GWS, we werent able to chase down Adelaide. We need to start better against North. ' ' '