INDIANAPOLIS -- The Indianapolis Colts second straight win may have cost them quarterback Andrew Luck.Luck entered the concussion protocol after complaining about concussion-like symptoms following Sundays 24-17 victory over Tennessee. Coach Chuck Pagano said Monday he believes the injury concussion occurred in the fourth quarter, but couldnt cite which play Luck was injured on.The surprising news came a little more than 24 hours after Pagano told reporters the Colts had no significant injuries from the game. Indy (5-5) hosts Pittsburgh on Thanksgiving night, leaving little time for Luck to recover. If he cant play the Colts will likely go with backup Scott Tolzien, who hasnt thrown a regular-season pass since the 2013 season.Andrew and (safety) Clayton Geathers, pretty much well after we were all done with media and the locker room and things like that, both guys didnt feel right, Pagano said Monday. Both guys went in the training room and saw our docs and both were evaluated for concussions. Both are in the protocol and its up to the docs and trainers to monitor that situation, so thats where thats at.Geathers also entered the protocol after apparently getting hurt on the final defensive play of the game.Even with Luck healthy and playing pretty well this year, its been a struggle. Indy needed fourth-quarter rallies to win its first two games and had to hold off opponents comeback bids in each of the last three wins.Last year, Luck missed nine games with multiple injuries, the last seven because of a lacerated kidney. To help keep him healthy this season, the Colts reduced his workload at practice. But he has been sacked a league-high 35 times.So when Luck was not taking snaps at practice Monday, it wasnt immediately clear whether it was part of the routine or a new injury.After practice, Pagano clarified what had happened -- and the process Luck must undergo before playing again.You have to feel better, you have to take an impact test and pass an impact test, then practice non-contact, then have another day and then take another impact test and be cleared by an independent, he said. Again, that is our trainers and docs that will handle that.The timing couldnt be worse.Indy just moved back into second place in the AFC South and got back into the playoff hunt by stringing together its first winning streak of the season. A third straight win would be a major step forward for a team that has been inconsistent all season.Now, the Colts will probably face an old nemesis, Pittsburgh (5-5), without their star quarterback.The Steelers have won three straight in the series and 13 of the last 15 since 1984, and they just snapped a four-game losing streak with a win Sunday at Cleveland.Its not the first time the Colts have faced this sort of predicament. Lucks 2015 injuries forced the Colts to rely on four additional quarterbacks to get through a season in which they finished 8-8 and missed the playoffs for the first time since 2011. And Indy won the final game after signing Josh Freeman and Ryan Lindley as replacement quarterbacks the week of the game.Tolzien has two career starts, both in 2013 when he replaced injured Green Bay quarterback Aaron Rodgers. He finished that season 55 of 90 with 717 yards, one touchdown and five interceptions.But the short week doesnt leave much time for Pagano to fret.He has a limited amount of exposure, but he is a pro, Pagano said. Again, if he has to roll and be the guy then he will do a great job. He prepares really well every single day.---For more NFL coverage: http://www.pro32.ap.org and http://www.twitter.com/AP-NFLNMD Canada Sale . After slipping from the summit during the week, the Gunners overcame struggling Crystal Palace 2-0 on Sunday thanks to Alex Oxlade-Chamberlains second-half brace. NMD Canada Online .C. Lions has come to an end. Banks told TSN on Jan 2 that he had no interest in playing out the option year of his contract with the Lions in 2014, and he again made that clear in a conversation with Lions GM Wally Buono last week. http://www.nmdshoescanada.com/nmd-cs2-cheap-canada.html . Ashley Youngs cross was inadvertently headed by Chester into his own net in the 66th minute, allowing United to claim a third straight league win. "We had to dig deep with our fighting spirit and weve done that," United striker Wayne Rooney said. NMD R1 Canada Mens . DAmigo scored twice in regulation and added the shootout winner as the Toronto Marlies edged the San Antonio Rampage 5-4 in American Hockey League action. NMD R1 Womens Canada . -- Anaheim Ducks captain and leading scorer Ryan Getzlaf has been scratched from Sunday nights game against the Vancouver Canucks because of an upper-body injury. Toowoomba trainer Ben Currie has been fined $6000 for presenting a horse to race with a prohibited substance in its system earlier this year.However, stewards adjourned a second inquiry involving Currie until next week.After an initial hearing on Wednesday, stewards charged Currie after Tints returned a positive swab to the steroid boldenone at Rockhampton on April 8.Currie pleaded not guilty but after taking lengthy evidence stewards found otherwise and fined him $6000.Chief steward Allan Reardon said Currie had been charged with presenting a horse with a prohibited substance which usually carried a fine.TThe trainer had not been charged with the more serious administration of a steroid which could carry an automatic disqualification.ddddddddddddReardon said there was no evidence to support an administration charge in Curries case.Stewards also took evidence involving a positive to a methamphetamine allegedly found in a swab from Party Till Dawn after she won at Toowoomba on July 16.Reardon said that inquiry was adjourned until next Wednesday so other evidence could be presented. 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