11:00 a.m. — Tennis: Men’s Doubles Final
Americans Bob and Mike Bryan are trying to win their second straight doubles gold after completing their career Golden Slam (a Grand Slam and an Olympic gold) in London four years ago. But there's one opponent they may not be able to defeat: Father Time. The pair are now 38 years old.
2:30 p.m. — Judo
You might want to make sure you let your lunch sit for a while before you watch these heavyweight competitors toss each other around. Medals are awarded today in the biggest weight classes (over 220 pounds for men, over 172 for women).
9:00 p.m. — Swimming
The most decorated Olympian in history will look to add to his incredible medal haul. Michael Phelps, swimming in his fifth Games, (below) has won 22 medals will be one of the favorites in the 200-meter butterfly. His time in the Olympic trials was five seconds slower than his world record. But he was still the fastest American, and with a medal on the line, look for him to find an extra gear.
Want to know what to watch next? Check out the rest of the ultimate 2016 Summer Olympics watch guide!
Photo: Jennifer Pottheiser/Getty Images