Emmanuel Bor upsets Paul Chelimo in American indoor 5K record attempt

Bor’s finishing time was just four seconds behind Rupp’s American record

How to watch Paul Chelimo’s 5,000m American record attempt

The Olympic silver medallist will be looking to beat Galen Rupp’s national best of 13:01.26 on Thursday in Virginia

Paul Chelimo going for American indoor 5,000m record

If the Olympic silver medalist accomplishes his goal, he stands to be the first American man to run under 13 minutes in the indoor 5,000m