Tokyo: Satwiksairaj Rankireddy's recurring shoulder problem forced him and Chirag Shetty to retire from their Japan Open opener even as P V Sindhu eased into the women's singles second round with a straight-game win over Malaysia's Wong Ling Ching here on Tuesday.
The world No.4 Indian pair, who ended a two-year title drought by winning the Singapore Open but had to withdraw from Indonesia Open last month, retired after losing the opening game 19-21 to Denmark's Daniel Lundgaard and Mads Vestergaard.
