Monchengladbach, Germany – Tolgay-Ali Arslan scored his first Park with a 1-1 tie Friday against Monchengladbach.
Mike Hanke gave Gladbach the lead on the final play of the first half, but the equalizer from Arslan in the 55th minute helped Hamburg share the points. With the draw, Hamburg became just the fourth team to take points at Gladbach.
Monchengladbach remained unbeaten at home, just one of two teams in the league still without a home loss, but wasted a chance to climb level with first-place Borussia Dortmund on points.
Monchengladbach took the lead off a free kick, with Hanke glancing a header to the left post from 12 yards for his sixth goal of the season. Hamburg erased the deficit 10 minutes after half, as Arslan drove a loose ball into the net from inside the 6-yard box.
Gladbach had the better chances to pull out a late win, but settled for its fourth draw against eight wins at home.
Bayern Munich will try to rebound from last week's 0-0 draw against Freiburg and its 1-0 loss at Basel in the Champions League on Wednesday when it hosts Schalke this weekend.
"It's not gone according to plan, and we're stuck in a tricky situation," said Bayern goalie Manuel Neuer, who is set to face his former team again.
Bayern leads Schalke by one point in the standings, but a win by either squad would be enough to climb to second.
Borussia Dortmund hosts seventh-place Hannover in Sunday's other match, as it puts its 16-match unbeaten streak on the line. Japan midfielder Shinji Kagawa could return from an ankle injury for Dortmund.
Otto Rehhagel makes his coaching debut Saturday for Hertha Berlin at Augsburg, and Lukas Podolski could return when Cologne hosts Bayer Leverkusen.
"I might be good for ten or 15 minutes, we'll have to wait and see," Podolski said.
Also Saturday, Mainz hosts Kaiserslautern, Stuttgart hosts Freiburg, Wolfsburg hosts Hoffenheim, and Werder Bremen hosts Nurnberg.