NBA Win Probability graphs have been updated with games through last night (December 28). With that update, Chris Bosh amassed the largest single game Win Probability Added (WPA) of the season: 104.4% (an entire game's worth, with 4.4% to spare). Here is the win probability graph and box score: MIA 108, POR 107.
Of Bosh's 104.4% WPA, 68% came on a single play: A three pointer to put the Heat up by 1 with less than a second to go in overtime.
See yesterday's post for additional info on the graphs and the calculation of Win Probability Added.