His mom said it best, this is most likely his farewell tour. This could be the last time Indiana ever sees Michael Phelps again. Get tickets!
From USA Today:
"I have some times that I want to hit in mind," he said. "This is a chance to see where I stand for worlds. That's the biggest thing, is trying to get as prepared as I can and hit all my marks before world championships. If I do that, then I can set up my Olympic trials."
"...My mom brought up the point that this could be the last time I swim in these pools, and the last time that she travels to these cities," he said. "It's hard to think about, but we've been able to have a great career in every pool."
Photography by Mark Savage at Pan Pacific championships - All rights reserved