FILE - In this Thursday, Aug. 11, 2016 file photo, Belgium's Pieter Timmers holds up his silver medal after the men's 100-meter freestyle during the swimming competitions at the 2016 Summer Olympics, in Rio de Janeiro, Brazil. Belgian swimmer Pieter Timmers had planned to retire after Tokyo last summer. He's decided to stick to his timeline rather than disrupt his family's plans. (AP Photo/Lee Jin-man, file)

FILE - In this Tuesday, April 2, 2019 file photo, Golden State Warriors center Andrew Bogut looks on during an NBA basketball game against the Denver Nuggets in Oakland, Calif.. Australian basketball player Andrew Bogut had hoped to finish his career in Tokyo last summer, but he announced his retirement in December, saying “I just can't physically and mentally get to 2021." (AP Photo/Jeff Chiu, file)