Eugene: World silver medallist Ashton Eaton, accustomed to the rain in his native Oregon, splashed to a big first-day decathlon score at the U.S. Olympic trials on a chilly Friday.

The world indoor record holder posted record decathlon performances in the 100 metres and long jump, his first two events, and finished the day 17 points ahead of the pace Dan O'Brien marked to set the American decathlon record in 1992.

"It was one of the best first days I have ever seen," O'Brien told Reuters after Eaton clocked a total of 4,728 points from the five events.

Whether the 24-year-old can reach O'Brien's record of 8,891 points after Sunday's closing five events may depend on the weather, which is expected to be rainy once again.

He went into Sunday with a 322-point lead over world champion Trey Hardee. Olympic champion Bryan Clay was running third at 4,252 points.

The top three finishers in the trials, which continue through July 1, book tickets to London provided they meet the Olympic qualifying standard.

In Friday's only finals, U.S. record holder Galen Rupp clocked a meet record 27 minutes, 25.33 seconds to win the men's 10,000 metres and Amy Hastings took the women's race in 31:58.36.

Rupp was joined on the U.S. team by runner-up Matt Tegenkamp (27:33.94) and third-place finisher Dathan Ritzenhein (27:36.09).

Hastings's London team mates will be Lisa Uhl, the fourth-place runner, and Janet Cherobon-Bawcom, who finished seventh, the pair securing selection having already made the "A" qualifying standard.

Runner-up Natosha Rogers (31:59.21) failed to make the Olympic grade, while the third-placed Shalane Flanagan will run the marathon at London.


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