San Diego had a 3 point lead when they punted to Eddie Royal with 5:27 left in the fourth quarter. If the defense was able to stop the Broncos offense, which hadn't been very impressive, the Chargers win the game and end their losing streak at 5 games. The first two plays went according to plan, a 1 yard rush by Willis McGahee and Tim Tebow getting his for a loss of 2 yards.
With the clock ticking down to nearly 4 minutes left, the Broncos had to rely on their paltry passing game to get them out of a 3rd & 11 hole. The Chargers played zone coverage down the field, and rushed 4 guys who were more intent on keeping Tebow in the pocket than actually sacking him.
With plenty of time to progress through his reads, Tebow found his number 1 WR (Eric Decker) running downfield with single coverage against the Chargers backup Safety (Paul Oliver) and hit him with a perfect 39 yard pass to take the Broncos from their own 25 yard line to field goal range (the Chargers' 36 yard line).
After that, Tebow completed another pass, a 23-yarder to Dante Rosario, to make Matt Prater's field goal attempt that much easier. It was the pass to Decker, the result of a bad playcall and a hesitant pass-rush, that broke San Diego's back and turned a win into Overtime and, eventually, a win for Denver.