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The Olympians have been stripped of their credential after violating the COVID-19 protocol by going sightseeing.
The top-ranked tennis star lost his cool and abused his racket several times during a 6-4, 6-7 (6), 6-3 defeat to Spain's Pablo Carreño Busta.
After a three-race performance on Saturday that included another gold medal, the U.S. swimmer has two more medals on the line Sunday.
The Rio gold medalist's father, Mike, said his son was responsive at the hospital following a wreck in the Olympics semifinal race.
Swimming the second leg of the U.S. mixed medley team, Lydia Jacoby's goggles fell from her eyes at the start of her swim, and the Americans were left off the podium.
Ledecky completes the three-peat by holding off Australia's Ariarne Titmus to win her seventh career Olympic gold medal.
Biles is still dealing with what she calls the "twisties" and will be replaced by MyKayla Skinner.