* Bayern one point clear at top
* Leverkusen go second with 2-1 win over Arminia
* Schalke stretch winless run to 24 games (Updates with more results and details)
MUNICH, Germany, Nov 21 (Reuters) - Lacklustre Bayern Munich had to come from behind to rescue a 1-1 draw against Werder Bremen on Saturday, slipping up for only the second time in their last 35 matches in all competitions but staying a point ahead of undefeated Bayer Leverkusen.
Four days after Germany's stunning 6-0 loss to Spain, there was little in terms of redemption for Bayern's many internationals, with the German champions failing to hit a single shot on target in the entire first half.
Werder took a deserved lead on the stroke of halftime after Josh Sargent set up Max Eggestein who beat keeper Manuel Neuer with a well-placed left-footed effort.
Bayern, who had won 33 of their previous 34 games in all competitions, had to wait until the 50th minute for Douglas Costa to rattle the crossbar with a fierce shot and the hosts to show some signs of life.
They upped the pace briefly and Kingsley Coman drew them level, nodding in at the far post in the 62nd but for the next 20 minutes they again dropped back before a couple of late chances for Eric Choupo-Moting and Robert Lewandowski.
The hosts, however, have Neuer to thank for avoiding the second league defeat of the season after he beat Sargent in a one-on-one in the 88th minute.
Bayern are on 19 points, three ahead of RB Leipzig, who are in action later against Eintracht Frankfurt.
Unbeaten Bayer Leverkusen are provisionally second on 18 after their 2-1 win over Arminia Bielefeld, courtesy of Aleksandar Dragovic's 88th-minute winner on the rebound.
Schalke 04 slumped to a 2-0 defeat at home against VfL Wolfsburg and have now gone 24 league matches without a win. Schalke, who are edging closer to the all-time winless run of 31 matches in the league set by Tasmania Berlin in 1965/66, are 17th. (Reporting by Karolos Grohmann; editing by Clare Fallon)