Michael Phelps will compete in two events today after he qualified for the Men's 200m Butterfly. The US Swimming team also took first place in the 4x200m Freestyle Relay (800m Free).
Phelps has yet to capture gold in the events he has been a part of. He is a heavy favorite in the 200m Butterfly which will begin at 2:47 p.m.
Phelps and Ryan Lochte lead the U.S. Team in the 4x200m Freestyle Relay defeating their opponents by almost a three-second margin.
He will swim in this event at around 3:47 p.m.
Here is the remaining schedule for Tuesday's matches.
Fellow Americans Nathan Adrian and Kathleen Hersey will also be competing on Tuesday afternoon in London. Adrian will partake in the in the Men's 100m Freestyle and Hersey will look to advance to the Finals as they will swim in the Semis.
Missy Franklin will swim in the Women's 200m Freestyle Finals.
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July 31st, Day 4
| Event | Time (ET/GMT) |
| Men's 4x200m Freestyle Relay | Heats: 6:02 a.m./11:02 a.m. |
| Finals: 3:47 p.m./8:47 p.m. | |
| Women's 200m Freestyle | Finals: 2:39 p.m./7:39 p.m. |
| Men's 200m Butterfly | Finals: 2:47 p.m./7:47 p.m. |
| Women's 200m Individual Medley | Finals: 3:39 p.m./8:39 p.m. |
| Men's 100m Freestyle | Heats: 5 a.m./10 a.m. |
| Semifinals: 2:30 p.m./7:30 p.m. | |
| Women's 200m Butterfly | Heats: 5:23 a.m./10:23 a.m. |
| Semifinals: 2:55 p.m./7:55 p.m. | |
| Men's 200m Breaststroke | Heats: 5:40 a.m./10:40 a.m. |
| Semifinals: 3:17 p.m./8:17 p.m. |