CREATE TABLE table_76258 ("Date From" TEXT, "Date To" TEXT, "Position" TEXT, "Name" TEXT, "From" TEXT)

What date did Toumani Diagouraga, who played position MF, start?
SELECT "Date From" FROM table_76258 WHERE "Position" = 'mf' AND "Name" = 'toumani diagouraga'
SELECT "Date From" FROM "table_76258" WHERE "Name" = 'toumani diagouraga' AND "Position" = 'mf'