Felix 3rd in Prefontaine 400; Semenya 2nd in 800

By ANNE M. PETERSON | June 4, 2011 | 4:58 PM EDT

Kenia Sinclair, right, hits the tape ahead of Caster Semenya, left, to win the women's 800-meter race during the Prefontaine Classic track and field meet in Eugene, Ore., Saturday, June, 4, 2011. Sinclair won and Semenya finished second. (AP Photo/Don Ryan)

EUGENE, Ore. (AP) — Defending champion Allyson Felix has finished third in the Prefontaine Classic 400 meters and world champion Caster Semenya placed second in the 800 in her American debut.

Amantle Montsho of Botswana won the 400 in 50.59 seconds Saturday, while Felix crossed in 51.41 to trail fellow American Debbie Dunn by 0.04. Felix is a three-time world champion and a two-time Olympic silver medalist in the 200.

Semenya timed 1 minute, 58.88 seconds to finish 0.59 behind Kenia Sinclair of Jamaica. The South African won the event at the 2009 world championships, but was unable to complete for much of last year because of controversial gender testing.

The Pre, as it is known, is the fourth stop on the international Diamond League circuit.