Scottish hopes of success at this week's All England Open Championships in Birmingham rest with Hamilton's Kirsty Gilmour and Paul Van Rietvelde.
Longniddry's Van Rietvelde and men's doubles partner Chris Coles from Milton Keynes face Taipei's Lin Chia Yu and Hsiao Lin Wu in Tuesday's qualifying.
They hope to repeat the two qualifying-round wins they achieved at the German Open last week to reach the main draw.
On Wednesday, Gilmour plays Tai Tzu Ying, the seventh seed from Taipei.
Should Van Rietvelde and Coles get through their first match they will play England's second qualifying seeds, Andrew Ellis and Peter Mills, for a place in the main draw.
Gilmour, 21, has played 20-year-old Tzu Ying once before, in the 2013 World Championships.
The Glasgow Athlete of the Year lost in three games but she has far more experience now and said: "I am looking forward to the chance of avenging that defeat from the first time we met but I know I need to be at my best as she won the Hong Kong title and the World Superseries finals in 2014."
Several Scottish players will compete in the 50th Portuguese International in Caldas da Rainha, the main draw for which begins on Friday.
Kieran Merrilees is seeded fifth and faces an opponent from qualifying.
Matthew Carder, Alex Dunn, Josh Neil and Ben Torrance must all tackle Thursday's qualifying rounds, needing three wins to make the main draw.
Julie MacPherson is also forced to qualify in the women's singles and faces third qualifying seed Joanna Karkantzia of Greece in her opening contest.
Scotland's best hopes are Martin Campbell and Patrick MacHugh, with the Yonex Scottish National champions top seeds in the men's doubles as they look to build on their success in Iceland in January where they retained their title.
They are seeded to meet Croatian pair Zvonimir Durkinjak and Zvonimir Hoelbling in the final on Sunday.
Neil and Torrance and Dunn and Adam Hall are also in the main draw.
In the women's doubles, Rebekka Findlay and Caitlin Pringle start with a first round tie against Portugal's Ana and Joana Amaral with German fourth seeds Barbara Bellenberg and Ramona Hacks awaiting the winners in the second round.
Findlay partners MacHugh in the mixed doubles and the pair face Swedish opposition in the first round in the form of Filip Myhren and Emma Wengberg.
Hall and MacPherson are also in mixed doubles action and the Scottish Nationals runners-up start with a bye. They are on course for a quarter-final with Austrian top seeds Roman Zirnwald and Elisabeth Baldauf.