BERLIN - Striker Mladen Petric scored twice in the first half to give Hamburg a 2-1 away win against Cologne on Sunday and catch fourth-placed Hertha Berlin on 30 points. Hamburg are fifth on goal difference. It was Hamburg's first Bundesliga away win in more than two months, coming days after Martin Jol's team qualified for the next stage of the UEFA Cup with an away win against Slavia Prague. Petric's sixth goal of the season came after 15 minutes when Marcell Jansen sprinted past two defenders on the left and floated a deep cross for Petric to head in at the far post. The Croatian scored his second of the match just after the half hour mark with a diving header from two metres after Jori Mathijsen headed on a Piotr Trochowski corner. Milivoje Novakovic pulled one back for the hosts in the 83rd. But it was not all good news for Hamburg, who saw defender Alex Silva hobble off after only two minutes following a tackle by Roda Antar. In the only other match of the day Wolfsburg beat Hanover 2-1 to move up to sixth place. Wolfsburg struck first with defender Cristian Zaccardo after a swift combination on the right between Christian Gentner and Zvjezdan Misimovic. Jiri Stajner equalised for Hanover in the 59th with a nice volley but four minutes later scored an own goal heading a Misimovic free kick past keeper Florian Fromlowitz. Fromlowitz was red carded for a foul inside the box in the 81st but central defender-turned keeper Frank Fahrenhorst did well to save the penalty taken by Edin Dzeko. Surprise packages Hoffenheim still lead the table with 34 points from 16 games despite a 2-1 defeat at Bayern Munich on Friday. Bayern are second on goal difference while Hertha's 1-0 defeat to Schalke on Saturday dropped them to fourth on 30 points. Bayer Leverkusen have moved up to third on 31 points following their 3-1 victory at Borussia Moenchengladbach.