First light on the pond. Reflective tarp at far end. #WinterClassic http://pbs.twimg.com/media/CXpJM3mWMAAit7P.jpg
Temp at 40F, more protective tarp put in place. Ideal surface temp is 22F. #WinterClassic http://pbs.twimg.com/media/CXpLqiWVAAEZbhh.jpg
The tarp is on the ice #WinterClassic http://pbs.twimg.com/media/CXpeTpKUsAEgxLI.jpg
ICYMI, a cool look back at the year in Boston sports, by members of the Globe sports dept. bit.ly/22yG0F2 http://pbs.twimg.com/media/CXpfxjpWwAAAIj7.jpg
Tom Brady's response to being pictured on Bruins goalie Tuukka Rask's mask
Hey @NHLBruins, need a couple more enforcers today? #WinterClassic http://pbs.twimg.com/media/CXoL-PvWQAEcgX9.jpg
#Habs P.K. Subban will be wearing some fancy new skates at #WinterClassic: tinyurl.com/gsyngd4 http://pbs.twimg.com/media/CXpluK-UEAERNIm.jpg
Meet Don Renzulli, the man who is responsible for running the #WinterClassic for the NHL: tinyurl.com/ohd6dsw http://pbs.twimg.com/media/CXpmo8SU0AAKCUI.jpg
#Habs preview: Crease-crashing Brendan Gallagher returns to lineup for #WinterClassic : tinyurl.com/zwf72wr http://pbs.twimg.com/media/CXpnmMyU0AEhc4N.jpg
John Tlumacki/Globe Staff
Join Mike Boone @HabsBlogger for his live #Habs blog during #WinterClassic : tinyurl.com/gtdt7ng http://pbs.twimg.com/media/CXpog6aUAAAXD95.jpg
Meanwhile at the Little Kids Winter Classic ... (John Tlumacki/Globe Staff)
The tarp is off the ice! #WinterClassic http://pbs.twimg.com/media/CXpuN_AWwAAPx-n.jpg
#Habs and #Bruins hit ice for pregame warmup at #WinterClassic http://pbs.twimg.com/media/CXpvmMiWsAATYOb.jpg
Welcome to the Winter Classic. http://pbs.twimg.com/media/CXpveggWAAA7B45.jpg
Teams done warming up. Zambonis cleaning up before the start #WinterClassic http://pbs.twimg.com/media/CXp0w8vWMAE_SOv.jpg