Marie Turmann/Harri Lill (Tallinn, EST) qualified for the 2018 WCT Tallinn Mixed Doubles International playoffs, dropping their quarterfinals match 7-5 against Anastasia Moskaleva/Alexander Eremin (Moscow, RUS). of the 2018 WCT Tallinn Mixed Doubles International in Tallinn, Estonia;
 
Turmann/Lill finished 4-1 in the 18-team qualifying round. . In their opening game, Turmann/Lill defeated Stephanie Wild/Thomas Kupper (Baden, SUI) 9-6, then went on to lose 6-4 against Kristin Moen Skaslien/Magnus Nedregotten (Oslo, NOR). Turmann/Lill responded with a 7-6 win over Ieva Rudzite/Artis Zentelis (Riga, LAT). Turmann/Lill won 6-5 against Oona Kauste/Aku Kauste (Hyvinkaa, FIN), then won 11-8 against Marta Szeliga-Frynia/Pawel Frynia (Lodz, POL) in their final qualifying round match.
 
. For week 6 of the event schedule, Turmann/Lill did not improve upon their best events, remaining at th place on the World Ranking Standings with total points. Turmann/Lill ranks th overall on the Year-to-Date rankings with points earned so far this season.