Caster runs best 800m of year

● South African Olympic and world champion Caster Semenya ran the year’s fastest women’s 800m and American Ronnie Baker spoiled Christian Coleman’s outdoor debut with a wind-assisted 9.78 seconds in the 100m at the Prefontaine Classic Diamond League meeting yesterday.

Semenya, whose middle-distance running career is under threat because of a new IAAF hyperandrogenism rule, clocked 1m55.92sec in a dominant performance as she ran the fastest 800m yet on American soil.

The rule, which becomes effective in November, would effectively give Semenya a choice of taking medication to restrict her testosterone level or move to longer distance events.

She has not lost an 800m race since 2015. American Ajee Wilson finished second in 1:56.86.