Korea, St. Petersburg, Metz

WTA

Seoul 

Jelena Ostapenko is the top seed, world ranked #10, and all 8 seeds are in the top 60.

First round results:

• Stefanie Voegele defeated wildcard Ji-Hee Choi 6-3 2-6 6-4
• Tamara Zidansek defeated Polona Hercog 6-1 6-3
• Maria Sakkari (3) defeated Anna Karolina Schmiedlova 6-0 6-1
• Ekaterina Alexandrova defeated Johanna Larsson 6-1 6-2
• Su-Wei Hsieh (6) defeated qualifier Jil Teichmann 2-6 6-1 7-6(0)
• Mandy Minella defeated Magdalena Rybarikova (4) 6-3 3-2 (retired)
• Qualifier Priscilla Hon defeated wildcard Su Jeong Jang 3-6 6-2 6-2
• Ajla Tomljanovic defeated Alison Van Uytvanck (5) 3-6 7-5 7-5
• Irina-Camelia Begu (7) defeated qualifier Mona Barthel 7-5 6-4
• Aga Radwanska defeated Bethanie Mattek-Sands 6-4 7-5
• Margarita Gasparyan defeated qualifier Varvara Flink 7-5 6-4
• Kirsten Flipkens (8) defeated 16 year old Korean wildcard Sohyun Park 6-0 6-2.
• Evgeniya Rodina defeated qualifier Dejana Radanovic 6-1 6-1
• Dalila Jakupovic defeated qualifier Na-Lae Han 3-6 6-4 6-3

ATP

St. Petersburg 

Dominic Thiem is the top seed, world ranked #8, and the eight seeds are all in the top 40.

The top four seeds have first round byes.

First round results:

• Wildcard Stan Wawrinka defeated Aljaz Bedene 7-5 7-6(5)
• Martin Klizan defeated Evgeny Donskoy 6-4 6-4
• Jan-Lennard Struff defeated Andrey Rublev 6-4 7-6(6)
• Daniil Medvedev (8) defeated Joao Sousa 6-4 6-1
• Lukas Lacko defeated lucky loser Ruben Bemelmans 6-2 4-6 7-5
• Damir Dzumhur (6) defeated qualifier Lucas Miedler 7-5 6-3
• Matteo Berrettini defeated Guillermo Garcia-Lopez 7-6(5) 2-6 6-3

Metz

Kei Nishikori is the top seed, world ranked #12, and the seven seeds are all in the top 40.

Eighth seed Philipp Kohlschreiber was a late withdrawal,and his place in the draw was taken by lucky loser Yannick Maden.

The top four seeds have first round byes.

First round results:

• Lucky loser Yannick Maden defeated Mischa Zverev 7-5 4-6 6-1
• Ricardas Berankis defeated Maximilian Marterer 7-6(1) 6-7(1) 6-4
• Peter Gojowczyk defeated Jo-Wilfried Tsonga 6-7(5) 6-3 6-4
• Wildcard Ugo Humbert defeated qualifier Bernard Tomic 6-7(5) 6-3 6-4
• Nikoloz Basilashvili (5) defeated Kenny De Schepper 6-2 7-6(0)
• Qualifier Matthias Bachinger defeated Jaume Munar 6-4 6-4
• Qualifier Constant Lestienne defeated Jurgen Zopp 6-3 7-5
• Radu Albot defeated Pierre-Hugues Herbert 6-3 6-4