On the track. Olympic 400 champ Christine Ohuruogu is leading off for Great Britain.

After the opening 200 legs, USA Blue, Jamaica and the World All-Stars are well in front. Debbie Dunn runs a strong leg to put USA Blue in front at the final exchange.

Kenia Sinclair of Jamaica sits on Hazel Clark through the first lap of the anchor leg, powers into the lead at 500-meter mark. To the crowd’s deafening delight, Sinclair cruises home in 3:34.56. That’s a world best for this rarely run event. Maria Savinova ran a strong leg to bring Russia past USA Blue for second, 3:37.37 to 3:38.36. Results.

Unofficially Sinclair was in the 1:57 range on her anchor! Lynx now confirms: 1:57.43! Needless to say, that’s the fastest women’s 800 split at the Relays.