The brothers have done everything there is to do in their corner of the sport now that they own Olympic gold, but their journey doesn't end there.
No matter how elevated Serena Williams' confidence was, who saw this destruction coming?
Roger Federer and Juan Martin del Potro fought and fought and fought all the way into the record books. But only the Swiss has a chance for gold.
A singles gold medal is the last title of any stature Serena Williams doesn't have on her resume. And whether she'll admit to it or not, there's an urgency to her latest Olympic mission.