Russian pole-vaulter Yelena Isinbayeva and American 400m runner Sanya Richards remained in contention for the Golden League jackpot with victories at the Van Damme meeting on Friday.

If the pair win again in Berlin today they will share the $1 million prize on offer for any athletes who win their event in all six Golden League meetings this season.

It was a night of mixed emotions for Jamaican sprinter Asafa Powell who failed to set a second 100 metres world record in less than a week.

Powell, who broke his own world record with a time of 9.74 seconds in Italy last Sunday, finished in 9.84.

Norway's Jaysuma Saidy Ndure was second in 10.11 seconds with Powell's compatriot Michael Frater third (10.12).

Isinbayeva's victory was also tinged with disappointment after she failed in three world record attempts at 5.02 metres after clearing 4.90 easily to win the event.

Richards cruised to a season's best 49.36 seconds to win the 400 metres in style.

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