Sankar Subramanian stuns world No. 2 Antonsen in Swiss Open; Treesa-Gayatri in semis
S. Sankar Muthuswamy. File | Photo Credit: The Hindu India’s Sankar Muthusamy Subramanian caused a major upset by knocking out world no. 2 Anders Antonsen of Denmark in a thrilling three-game contest to reach the men’s singles quarterfinals of the Swiss Open Super 300 badminton tournament here. The 21-year-old from Tamil Nadu, a silver medallist…