Michael Phelps of Cascadia Behavioral Healthcare distributes water to vulnerable members of the community as a heat wave continues in Portland, Oregon, U.S., August 13, 2021. REUTERS/Mathieu Lewis-Rolland 

U.S. Olympic gold medalist Michael Phelps speaks during an interview with journalists on the sidelines of the Olympic Games in Tokyo, Japan July 25, 2021. REUTERS/Nathan Frandino 

U.S. Olympic gold medalist Michael Phelps speaks during an interview with journalists on the sidelines of the Olympic Games in Tokyo, Japan July 25, 2021. REUTERS/Nathan Frandino 

U.S. Olympic gold medalist Michael Phelps attends an interview with journalists on the sidelines of the Olympic Games in Tokyo, Japan July 25, 2021. REUTERS/Nathan Frandino 

Olympian Michael Phelps, captain of Team Panasonic, joins Michael Moskowitz, CEO of Panasonic Corporation of North America, onstage at a Panasonic news conference during the 2020 CES in Las Vegas, Nevada, U.S., January 6, 2020. REUTERS/Steve Marcus 

Golf - 2018 Ryder Cup at Le Golf National - Guyancourt, France - September 25, 2018 Michael Phelps during the celebrity challenge match REUTERS/Carl Recine 

Golf - 2018 Ryder Cup at Le Golf National - Guyancourt, France - September 25, 2018 Michael Phelps during the celebrity challenge match REUTERS/Carl Recine 

Golf - 2018 Ryder Cup at Le Golf National - Guyancourt, France - September 25, 2018 Michael Phelps during the celebrity challenge match REUTERS/Charles Platiau 

Kids Choice Sport Awards 2018 – Arrivals – Los Angeles, California, U.S., 19/07/2018. Michael Phelps takes part in a challenge on stage. REUTERS/Danny Moloshok 

Kids Choice Sport Awards 2018 – Arrivals – Los Angeles, California, U.S., 19/07/2018. Michael Phelps takes part in a challenge on stage. REUTERS/Danny Moloshok 

Kids Choice Sport Awards 2018 – Arrivals – Los Angeles, California, U.S., 19/07/2018. Michael Phelps takes part in a challenge on stage. REUTERS/Danny Moloshok 

Kids Choice Sports Awards 2018 – Show – Los Angeles, California, U.S., 19/07/2018. Michael Phelps and family react. REUTERS/Danny Moloshok 

Kids Choice Sport Awards 2018 – Arrivals – Los Angeles, California, U.S., 19/07/2018. Michael Phelps with wife Nicole and son Boomer Robert. REUTERS/Danny Moloshok 

Kids Choice Sport Awards 2018 – Arrivals – Los Angeles, California, U.S., 19/07/2018. Michael Phelps with wife Nicole and son Boomer Robert. REUTERS/Danny Moloshok 

Soccer Football - 2018 World Cup Qualifying Playoffs - Peru vs New Zealand - Westpac Stadium, Wellington, New Zealand - November 11, 2017. New Zealand's Michael McGlinchey competes for the ball with Edison Flores of Peru. REUTERS/Anthony Phelps 

Soccer Football - 2018 World Cup Qualifying Playoffs - Peru vs New Zealand - Westpac Stadium, Wellington, New Zealand - November 11, 2017. New Zealand's goalkeeper Stefan Marinovic stops the ball as team mate Michael Boxall pushes away Jefferson Farfan of Peru. REUTERS/Anthony Phelps 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is sprayed with gold "slime" as he accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is sprayed with gold "slime" as he accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is sprayed with gold "slime" as he accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is sprayed with gold "slime" as he accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is sprayed with gold "slime" as he accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is sprayed with gold "slime" as he accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is covered in gold "slime" as he accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is covered in gold "slime" as he accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is covered in gold "slime" as he accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is covered in gold liquid as he accepts the Legend Award. REUTERS/Mario Anzuoni TPX IMAGES OF THE DAY 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is covered in gold liquid as he accepts the Legend Award. REUTERS/Mario Anzuoni TPX IMAGES OF THE DAY 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is covered in gold liquid as he accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is covered in gold liquid as he accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is covered in gold liquid as he accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps is covered in gold liquid as he accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Show – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps accepts the Legend Award. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps and wife Nicole Johnson. REUTERS/Patrick T. Fallon 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps and wife Nicole Johnson. REUTERS/Patrick T. Fallon 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps and wife Nicole Johnson. REUTERS/Patrick T. Fallon 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps. REUTERS/Patrick T. Fallon 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps signs autographs for fans. REUTERS/Patrick T. Fallon 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps (R) and wife Nicole Johnson. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps poses with show host Russell Wilson (L). REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps chats with show host Russell Wilson (L). REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps chats with show host Russell Wilson (L). REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps poses with show host Russell Wilson (L). REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps signs autographs for fans. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps signs autographs for fans. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps signs autographs for fans. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps. REUTERS/Mario Anzuoni 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps (R) and wife Nicole Johnson. REUTERS/Patrick T. Fallon 

2017 Kids Choice Sport Awards – Arrivals – Los Angeles, California, U.S., 13/07/2017 - Olympic swimmer Michael Phelps and wife Nicole Johnson. REUTERS/Patrick T. Fallon 

Olympic gold medalist Michael Phelps reacts as fellow witnesses testify before the House Oversight and Investigations Subcommittee about anti-doping policy in international sport, in Washington February 28, 2017. REUTERS/James Lawler Duggan TPX IMAGES OF THE DAY 

Olympic gold medalist Michael Phelps testifies before the House Oversight and Investigations Subcommittee about anti-doping policy in international sport, in Washington February 28, 2017. REUTERS/James Lawler Duggan 

Olympic gold medalist Michael Phelps testifies before the House Oversight and Investigations Subcommittee about anti-doping policy in international sport, in Washington February 28, 2017. REUTERS/James Lawler Duggan 

Olympic gold medalist Michael Phelps testifies before the House Oversight and Investigations Subcommittee about anti-doping policy in international sport, in Washington February 28, 2017. REUTERS/James Lawler Duggan