Runaway Bundesliga leaders Bayern Munich won 4-0 at Freiburg on Sunday and veteran strikers Claudio Pizarro and Mario Gomez scored to boost their chances of World Cup recalls. Bayern, chasing a sixth successive title, opened up a 20-point lead over Schalke 04 with nine games to go. Peruvian forward Pizarro became the fourth oldest player to net in the Bundesliga when he gave Cologne an early lead at home to VfB Stuttgart before Germany's Gomez replied with a brace to lead the visitors to a 3-2 win.