Annalise Murphy has finished fourth in Race 3 in the Women's Laser Radial class.
The medal hopeful is now second overall ahead of Race 4.
She finished in a time of 46:43 with Marti Erdi of Hungary winning the third race.
Belgium's Evi van Acker currently leads the overall rankings ahead of Murphy.
Race 4 will get underway at 6.30pm.
4th for @Annalise_Murphy in Women's Laser Radial Race 3 💪🻠Race 4 to follow. #Sailing #TeamIreland pic.twitter.com/FDe9LFxL6T
— Team Ireland (@olympiccouncil) August 9, 2016
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