I have 3 candidates
1. 1984 Los Angeles Olympics 3000 Final
Mary Decker - Zola Budd
https://www.youtube.com/watch?v=B0vxAk6XsLU
2. 1972 Munich Olympics Men's 100 Meter Quarterfinals
http://articles.latimes.com/1990-02-15/sports/sp-1000_1_eddie-hart
3. 1972 Munich Olympics - Men's 4 x 400
Athletics at the 1972 Summer Olympics – Men's 4 × 400 metres relay
From Wikipedia, the free encyclopedia
Men's 4 × 400 metres relay
The men's 4 × 400 metres relay was the longer of the two men's relays on the Athletics at the 1972 Summer Olympics program in Munich. It was held on 9 September and 10 September 1972.
The United States had the three best 400 metre runners at the Olympics, and the 400 metres had been won by Vince Matthews earlier in the Games.
Matthews and 400 metres silver medalist Wayne Collett staged a protest on the podium - talking to each other and not standing at attention - during the national anthem, and the IOC banned them from the rest of the Olympics, while John Smith had pulled a hamstring while leading after 80 metre of the final and had been ruled unfit to run. This meant the heavily favored Americans were unable to field a team and were forced to scratch, leaving an open field.[1]