Just like Marie-José Perec (FRA) in the women’s events, US athlete Michael Johnson became Olympic champion in the 200m and 400m. The photo here was taken during the medal ceremony for the 200m ©IOC

25 Sep 2000: Michael Johnson of the USA runs during the Men's 400m Event at Olympic Stadium in the 200 Sydney Olimpic Games in Sydney, Australia. Michael Johnson wins the gold in this event.Mandatory Credit: Mike Hewitt /Allsport

25 Sep 2000: Michael Johnson of the USA leads the field on his way to gold in the Mens 400m Final at the Olympic Stadium on Day 10 of the Sydney 2000 Olympic Games in Sydney, Australia. \ Mandatory Credit: Mike Hewitt /Allsport

22 Sep 2000: Michael Johnson of the USA (top right) flies round the bend in Men's 400m Heats at the Olympic Stadium on Day Seven of the Sydney 2000 Olympic Games in Sydney, Australia. \ Mandatory Credit: Adam Pretty /Allsport

Deborah Phelps (R), mother of Michael Phelps, and partner Nicole Johnson (C) with their son Boomer celebrate gold in the Final of the Men's 4 x 100m Freestyle Relay on Day 2 of the Rio 2016 Olympic Games at the Olympic Aquatics Stadium on 7th August, 2016 in Rio de Janeiro, Brazil.

US basketballer Magic Johnson celebrates his gold medal won in the Olympic basketball tournament. The supremacy of the team entered by the USA for the Barcelona Games was so great (in addition to Magic Johnson, the ranks included outstanding players such as Michael Jordan and Scottie Pippen), that it went down in history under the well known nickname of the “Dream Team” ©Getty Mike Powell

Barcelona 1992-Match USA-CRO, 117-85, finale. JORDAN Michael and JOHNSON Earvin (Magic) celebrating victory.

Atlanta 1996, 400m, JOHNSON Michael (USA) 1st.

Sydney 2000-Athletics-400m-Michael Johnson (USA) 1st in the starting blocks

Sydney 2000-Athletics-400m-Michael Johnson (USA) 1st in the starting blocks