The most decorated Olympian of all time is back to collect some more hardware.

U.S. swimmer Michael Phelps is competing in the 100- and 200m butterfly, and will continue his rivalry with Ryan Lochte in the 200m individual medley at the 2016 Rio Olympics.

Phelps and the U.S. captured gold on Sunday in the 4x100m freestyle relay.

He's also expected to compete in the 4x200m freestyle relay, along with the 4x100 medley relay.

Phelps made history at the 2012 London Olympics as the first male swimmer to earn gold in the 100m butterfly and 200m individual medley in three straight Summer Games.

Phelps retired at the conclusion of the London Games with a record 22 medals (18 gold) in his illustrious career.

After a two-year break, however, Phelps came out of retirement in 2014 and qualified for the Rio Games by winning the 200m butterfly (1:54.84) at the U.S. Olympic swimming trials in June.

The Rio Games are expected to be the final Olympics for Phelps, but the 31-year-old recently expressed possible second thoughts.

"To have our first-born be able to watch -- I'll say this just, in case I come back -- my potential last Olympics," Phelps said in a Washington Post article. "Just so you guys don't beat me to death if I come back, I'm just going to say that. To have him watch the potential last races of my career is something I look forward to being able to share with him."

Michael Phelps couldn't resist making a comeback for the 2016 Rio Olympics. USATSI

How to watch (TV coverage on NBC, live stream on

All times Eastern

200m individual medley:

(Semifinals) Wednesday Aug. 10, 10:29 p.m.

(Finals) Thursday Aug. 11, 10:01 p.m.

100m butterfly:

(Heats) Thursday Aug. 11, 1:16 p.m.

(Semifinals) Thursday Aug. 11, 10:34 p.m.

(Finals) Friday Aug. 12, 9:12 p.m.

4x100m medley relay:

(Finals) Saturday Aug. 13, 10:04 p.m.

In addition to the legend of Phelps, the U.S. women's gymnastics team is expected to return to the gold medal stand in Rio. Led by young phenom Simone Biles, Team USA got started on Sunday with qualifications. Biles and Aly Raisman qualified to represent the U.S. in the all-around final.

While the competition gets started in the afternoon, most people will not see the action until the evening as NBC will tape-delay the events for prime-time television. Here is how the team gymnastics schedule breaks down with start times.

Simone Biles and Team USA are ready to go for gold. USATSI

How to watch (TV coverage on NBC, live stream on

All times Eastern

Individual all-around -- Thursday, Aug. 11, 3-5:10 p.m.

Tape-delayed for 8 p.m. on NBC

Individuals: vault and uneven bars -- Sunday, Aug. 14, 1-4 p.m.

Tape-delayed for 7 p.m. on NBC

Individual: balance beam -- Monday, Aug. 15 1-3:15 p.m.

Tape-delayed for 8 p.m. CT on NBC

Individual: floor exercise -- Tuesday, Aug. 16, 1-3:15 p.m.

Tape-delayed for 8 p.m. on NBC