Federer had never lost a tiebreak in a U.S. Open final, winning his four previous ones, but Del Potro ended that sequence by taking the tie-break 7-5 to tie the scores.
The gameplay varies from huge open battlefield expanses to tighter combat inside a building on the brink of collapse to a driving sequence in an SUV under attack from a chopper.
In a sequence that really said it all, point guard Raymond Felton found a wide-open Tyson Chandler for an alley-oop, but Chandler somehow missed the dunk, then fumbled a futile effort at a put back.