It didn't take long for
Phelps rebounded during preliminary heats on Friday morning, swimming the fastest 100-meter butterfly time in the world this year.
"This has kind of been my kind of event," he said, "the event I love swimming the most."
His time of 51.17 seconds put him just ahead of four others -- including
Phelps is competing in his fifth meet since coming back from a nearly two-year retirement. On Thursday, he finished seventh in the 100 freestyle.