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It's Day 4 of the 2016 Rio Olympics as action continues with some more medal placing events.

Here are Tuesday's key events and how to watch them.

Full Day 4 Schedule

Day 4 Medal Tracker

Medal Tracker
Rio 2016
Country
Gold
Silver
Bronze
TOTAL

Events to watch

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Simone Biles and Team USA are overwhelming favorites in the women's gymnastics finals. USATSI

Women's gymnastics -- Team final

Led by the talented tandem of Simone Biles and Aly Raisman, defending champion Team USA goes for another gold medal.

When: 3 p.m. ET

TV: Delayed broadcast at 8 p.m. ET on NBC

Stream: NBCOlympics.com

Women's soccer -- USA vs. Colombia

After a strong start, the USWNT continues its march toward gold.

When: 6 p.m. ET

TV: NBCSN

Stream: NBCOlympics.com

CBS Sports will be providing live updates for this match.

Women's swimming -- 200-meter freestyle final

U.S. swimmers Katie Ledecky and Missy Franklin square off. Ledecky's already made her presence felt in Rio thanks to her world-record time (3:56.46.) in the 400 meter freestyle.

When: 9:19 p.m. ET

TV: NBC

Stream: NBCOlympics.com

Men's swimming -- 200-meter butterfly final

Michael Phelps tries to bounce back after his silver medal showing in 2012. Phelps will be tested by Hungary's Laszlo Cseh, who clocked in at 1:52.91 in the European Championships.

When: 9:28 p.m. ET

TV: NBC

Stream: NBCOlympics.com

Men's swimming -- 4x200 meter freestyle relay final

The U.S. is striving for a second straight gold medal in the event. After Team USA's first place finish in 2012, Phelps became the most decorated Olympian of all-time.

When: 10:38 p.m. ET

TV: NBC

Stream: NBCOlympics.com