London 2012

Stephen Kiprotich of Uganda is the Olympic Marathon champion. We covered the race as it happened, with splits and commentary

Caster Semenya’s silver medal in the 800m event brought accusations of deliberately losing. I analyze the validity of these accusations

David Rudisha produced an Olympic highlight by front-running to gold in a new world record. Thoughts on the race

The men’s 400m final produced an all-Caribbean affair, and a young champion. Thoughts and insights

Usain Bolt defended his 100m title against the challenge of Yohan Blake. An Olympic record, and more thoughts