Struggling Indian shuttler PV Sindhu lost to her old nemesis Carolina Marin of Spain in three games in an ill-tempered semi-final of the Denmark Open Super 750 tournament, which saw both players receive yellow cards for verbal exchanges, here on Saturday.

Sindhu, who has been struggling the whole season, lost 18-21, 21-19, 7-21 in the match that lasted one hour and 13 minutes.