Klaas Jan Huntelaar's hat trick helped Schalke to a 4-1 win over Mainz, while Bundesliga leader Bayern Munich grinded out a 1-0 win at Hertha Berlin on Saturday. Bayern also had a Dutchman to thank, with Arjen Robben's 27th-minute strike enough for the defending champions to go provisionally 10 points clear after 13 games. Huntelaar's brilliant chip in the ninth was followed by an easier finish in the 25th when he was left free. Japan striker Shinji Okazaki pulled one back a minute before the break, but Tranquillo Barnetta scored in the 54th and Huntelaar completed his hat trick seven minutes later. Bayer Leverkusen routed Cologne 5-1 in the Rhine derby, Werder Bremen defeated Paderborn 4-0, and Augsburg came from behind to beat Hamburger SV 3-1. (For more sports news andupdates, follow AhramOnlineSports on Twitter at@AO_Sportsand on Facebook atAhramOnlineSports.) http://english.ahram.org.eg/News/116765.aspx