That was Green's heroic shot in just a dying seconds, it wasn't wasted because they won in the OT.
That was a clutch shot by Green. I thought it was a MAVS win already but the kick out from LeBron was perfect. Respect for Green, his performance this season is exceptional.
The MAVs still needs to improve protecting their lead and closing out their game. They had a 10 point lead early in the 4th, but they let the Lakers catch up to them. Maybe one of the disadvantages of a very young team.
But in the last four minutes of the 4th, they simply melt down and then Green to tie and in the OT the Lakers took over.