By PAT GRAHAM DENVER — Devon Toews scored twice, including the go-ahead goal with 11:06 remaining, and the Colorado Avalanche beat the Florida Panthers 3-1 on Monday night. Mikko Rantanen added a late empty-net goal to help the Avalanche wrap up a four-game homestand at 3-0-1. Rantanen’s score allowed him to extend his points streak to 14 games. Mackenzie Blackwood finished with 25 saves as he continues to shine in net since being acquired in a deal with San Jose last month.