CREATE TABLE table_22941863_19 (stage INTEGER, winner VARCHAR)
SELECT MAX(stage) FROM table_22941863_19 WHERE winner = "Bernhard Eisel"
หากผู้ชนะคือ Bernhard Eisel เวทีสูงสุดคือเท่าใด?
If the winner is Bernhard Eisel, what is the stage maximum?