Michael Phelps has earned a chance to swim eight Olympic races, rallying to win the 100-meter butterfly at the U.S. trials.

Phelps was slow off the blocks and made the turn in sixth place Sunday night. But he caught Tyler McGill on the return lap and surged to the wall to win 51.14 seconds, well off his world-record pace (49.82) but fastest in the world this year.

McGill hung on for the second Olympic spot in 51.32. Ryan Lochte, swimming an event he normally doesn’t in major competitions, just missed adding another race to his already busy program. He was third, 33-hundreths behind McGill.

Phelps, who set an Olympic record with eight gold medals at the 2008 Beijing Games, is expected to swim the same eight events in London.

Four years ago, Katie Ledecky had no clue about how to qualify for the Olympics.

Now the 15-year-old distance swimmer is headed to London.

Ledecky won the 800-meter freestyle by a whopping 2.09 seconds at the trials Sunday night, making her the youngest member of the U.S. swim team.

She touched in 8 minutes, 19.78 seconds, with Kate Ziegler taking the second spot at 8:21.87 to earn her second Olympic berth. Ledecky broke the trials record of 8:20.81 set by Katie Hoff four years ago.

“I had a lot of confidence going into that race,” Ledecky said.

Anthony Ervin has capped an improbable comeback by earning a trip to the Olympics.

Ervin, who won gold in the 50-meter freestyle at the 2000 Sydney Games, finished second behind Cullen Jones in that event at the U.S. trials, good enough for a spot in London.

The 31-year-old Ervin was one of the sport’s rising stars when he stunning walked away in 2003, burned out on swimming and yearning to find a deeper meaning to life. He even auctioned off his gold medal to aid tsunami victims.

But Ervin returned to competition last year and quickly got back up to speed. Jones touched first in 21.59 seconds, but Ervin got there next (21.60).

His next race will be in London.