Horton (back) failed his physical -- as expected -- for the Leafs on Thursday, Pierre LeBrun of The Athletic reports.

Horton (back) remains on the Leafs' payroll, but his $5.3 million salary (through 2019-2020) does not count against the team's salary cap.

Horton (back) has been placed on injured reserve by the Maple Leafs, according to the NHL Media site.

Horton (back) failed his physical and will not be included on the Maple Leafs' training camp roster, Kevin McGran of the Toronto Star reports.

Not a good sign for Horton, who played in only 36 games last season, the fewest in his 10-year career. He also had a career-low five goals and 19 points in 2013-2014. He will likely miss all of training camp and could miss the start of the regular season.

Columbus Dispatch reporter Aaron Portzline seems optimistic about Nathan Horton being ready for Columbus Blue Jackets training camp. He missed a big chunk of the 2013-14 season while recovering from offseason surgery and then had more issues once he was able to play. His 14 points in 35 games might be disappointing, yet it's probably most accurate to give him an "Incomplete" grade for this past season.

Nathan Horton has undergone abdominal surgery. Horton will miss the next six weeks as a result, which kills his chances of helping the Blue Jackets in their playoff run unless they go deep. He has four goals and 14 assists in 35 games this season. Injuries have been a problem all season for Horton, which is part of the reason why his 2013-14 numbers are underwhelming. However, he had success in the playoffs during his days with Boston and Columbus could have certainly used his services.

Nathan Horton (lower body) didn't travel with the Blue Jackets to Dallas. Just in case you needed further confirmation that Horton won't be in the lineup Wednesday night. This game is a continuation of the one postponed when Rich Peverley had a cardiac event. Horton scored a goal before that happened, which will still count on Wednesday, which means that he will be credited with a goal in a game he didn't participate in.

Nathan Horton's attempt to return from a lower body injury on Tuesday wasn't successful. Horton logged 5:21 minutes before he was shut down in the second period. He will not play on Wednesday, which is the continuation of the game between Columbus and Dallas that was postponed when Rich Peverley had a cardiac event. Horton scored a goal before the game was postponed and that will count, so he will end up with a goal in a game that he is sidelined for.

Nathan Horton (lower body) will be a game-time decision on Tuesday. He has sat out the last four games with a lower-body injury. Horton took part in Monday's optional practice.