World indoor champion Boris Berian was upset in the men’s 800 metres, while Alysia Montano and Brenda Martinez had their Rio hopes dashed when they became entangled in the women’s race at the American Olympic trials.

Collegiate champion Clayton Murphy surged past Berian to punch his Rio ticket in 1:44.76, 16 hundredths of a second faster than Berian who still made the team for Brazil along with Charles Jock.

The biggest drama came in the women’s race over two laps, however, with little-known Kate Grace winning in 1:59.10 after Montano and Martinez came together before tumbling to the track on the final bend.

Without naming names, Martinez insisted she was clipped by a runner but Montano denied she was the guilty party.

“I just tried catching my fall but by then they were already making another gear, another move,” said 2013 world bronze medallist Martinez, who finished seventh in 2:06.63.

A distraught Montano lay on the track before getting up, jogging a bit, then falling to her knees before eventually reaching the line in 3:06.77.