Highest level Diede de Groot won a record 22nd Huge homerun wheelchair singles title as she crushed unseeded Zhu Zhenzhen 4-6, 6-2, 6-3 in the French Open ladies' last on Saturday.In the men's wheelchair last, second-cultivated Tokito Oda of Japan effectively safeguarded his Roland Garros title with a 7-5, 6-3 win over No. 3 seed Argentine Gustavo Fernandez. It was the fourth significant title for 18-year-old Oda.With the triumph of 27-year-old De Groot, she overwhelmed her Dutch comrade Esther Vergeer for the most titles in ladies' singles.