Le Mans Sarthe Basket started their playoff series with a loss in the Hauts-de-Seine, on Monday, May 25, 2026. As the sixth team in the regular season, the MSB had earned the right to face the third-placed team in the quarterfinals, Nanterre. The Manceaux missed out on this first encounter, losing 90-74. A logical defeat given the one-sided nature of the game in favor of Nanterre 92. The second leg of this series, to be played at the best of three, will take place on Wednesday, May 27, 2026, at the Antarès Arena. In the event of a win, the Manceaux will have the right to play a return match in Nanterre, on Friday, May 29. In the event of a defeat, it will be the end of the road for the Sarthois.