Olympics 2016 Michael Phelps

Olympics 2016: What Was Your Favorite Moment From Day 4 of the Rio Games?

At this point, Michael Phelps is going to need a Scrooge McDuck-style vault to store all that gold.

Phelps on Tuesday became the first Olympian to win 20 gold medals, following his first-place finish (1:53.36) in the men’s 200-meter butterfly final. The cherry on top of Phelps’ victory was that he bested rival Chad le Clos; the South African swimmer famously beat Phelps in the same event during the 2012 Olympics in London.

Here are some other buzzed-about moments from Day 4 of the Rio games:

* Simone Biles led the U.S. women’s gymnastics team — which includes Gabby Douglas, Laurie Hernandez, Madison Kocian and Aly Raisman — to a gold-medal victory; Russia took home silver and China nabbed bronze. The U.S. women’s team previously won gold in London (2012) and Atlanta (1996).

* Unfortunately, not all memorable Olympic moments are easy to watch. Case in point: Serena Williams‘ shocking 6-4, 6-3 loss at the hands racquet of Ukraine’s Elina Svitolina.

* Following teammate Missy Franklin’s disappointing start to the Rio games, fellow U.S. swimming star Katie Ledecky lifted America’s spirits on Tuesday by scoring gold (1:53.73) in the women’s 200-meter freestyle. Sweden’s Sarah Sjostrom took silver and Australia’s Emma McKeon took bronze.

* Olympian/reality star Ryan Lochte made his Rio debut on Tuesday, helping Team U.S.A. nab gold in the 4×200 freestyle relay.

* The U.S. women’s soccer team tied 2-2 in its match against Colombia; much attention was paid to an early slip-up by U.S. goalie Hope Solo, who allowed Colombia’s Catalina Usme to score the first point. Mallory Pugh scored the second.

* The U.S. men’s rugby team lost 17-14 against Argentina, then rebounded with an impressive 26-0 victory against Brazil.

What were your favorite moments from Day 4? Drop ’em in a comment below.