CREATE TABLE table_26232 ("No" FLOAT, "Player" TEXT, "Height  ( m ) " TEXT, "Height  ( f ) " TEXT, "Position" TEXT, "Year born" FLOAT, "Current Club" TEXT)

Display the serial numbers for the players who play at the center.
SELECT "No" FROM table_26232 WHERE "Position" = 'Center'
SELECT "No" FROM "table_26232" WHERE "Position" = 'Center'