USA TODAY Sports
Here are the biggest storylines to watch for Saturday at the Rio Olympics. Click here to see more detailed schedule and TV information.
Michael Phelps' final race
Phelps will finish his record-setting Rio Olympics with the men's 4x100-meter medley relay. The most decorated Olympian of all time can add to his total of 27 medals as the USA qualified second behind Britain. Despite comments by Ryan Lochte saying Phelps will be back in four years, Phelps has said this is it.