Mainz 05 had won their first two games of the season and the Bundesliga's other 100 percent record fell when Hanover 96 conceded a late equaliser to be held 1-1 at home by promoted Hertha Berlin.
Borussia Monchengladbach and Hanover lead the table with seven points from three games after a weekend in which the nine games produced an impressive 33 goals.
Monchengladbach, who survived relegation by the skin of their teeth last season, are top on goal difference.
Bayern Munich, who thumped Hamburg SV 5-0 on Saturday, lead a pack of seven teams on six points.
Mainz were on course for another win when Austrian Andreas Ivanschitz and Colombian Elkin Soto put them 2-0 ahead after only 12 minutes.
Dutchman Klaas-Jan Huntelaar followed up last week's hat-trick against Cologne by opening Schalke's account in the 57th minute from a chance selflessly set up by Raul and Benedikt Howedes headed the equaliser seven minutes later.
Joel Matip headed Schalke in front following a corner in the 81st minute and Austria captain Christian Fuchs blasted in a free-kick in the last minute to leave Schalke and Mainz both on six points.
Sergio Pinto fired Hanover in front after 33 metres with a 30-metre free-kick which he drilled through a gap in the wall.
With seven minutes left, substitute Pierre-Michel Lasogga beat his marker to Christian Lell's cross to divert the ball into the net.
Christian Pander found the net with a late free-kick for Hanover but his effort was disallowed.
