Alcaraz will look to win his first gold medal in Sunday's men's singles final.
Potocká suffered an asthma attack and will continue to be monitored at a local hospital.
For the first time since Athens 2004, China will not win both gold and silver in men's singles table tennis.
Canada could still advance to the knockout stage with a win over Colombia on Wednesday.
Holliday batted .271 with 10 home runs and 38 RBI in Triple-A since being demoted in April.
New Zealand will play Canada in the final as the Black Ferns look for their second straight gold medal.
Schauffele is coming off winning his second major this season at last week's The Open Championship.
Coco Gauff lost a heartbreaker to Donna Vekić after an intense argument with the chair umpire.
Murphy's wife, Bridget, held a sign up revealing the couple will be having a girl.