(CNN) -- Hamburg held onto top spot in the German Bundesliga despite drawing 1-1 away to Eintracht Frankfurt on Sunday, as title rivals Bayer Leverkusen also dropped points.
Ze Roberto celebrates after putting Hamburg into an early lead against Eintracht Frankfurt.
Both teams have 14 points after six rounds with four wins and two draws, with Bruno Labbadia's Hamburg having the edge on goal difference.
Leverkusen were held 0-0 at home by Werder Bremen, to leave the top two teams three points ahead of Bayern Munich, Hoffenheim and Mainz, who all won on Saturday.
Frankfurt also remained unbeaten along as Marco Russ canceled out Ze Roberto's opener for Hamburg at the Waldstadion to earn his side's fourth draw in six outings.
Hamburg, beaten 3-0 by Rapid Vienna in the Europa League in midweek, took the lead in the eighth minute when Brazilian midfielder Ze Roberto headed home Piotr Trochowski's cross.
But Russ leveled in the 31st minute as he fired in a volley from Selim Teber's header.
Ze Roberto came closest to scoring a winner when his deflected shot hit a post in the 65th minute, but Dennis Aogo was ruled offside in the build-up anyway.
Ioannis Amanatidis and Alexander Meier squandered late chances for Frankfurt.
Leverkusen failed to score for the first time this season as striker Stefan Kiessling was unable to set a new record by scoring for the sixth successive match.
The two-cap Germany international had the ball in the net two minutes into the second half against Bremen, but was clearly offside.
In Sunday's other game, bottom club Hertha Berlin suffered a 4-0 home defeat by promoted Freiburg.
Croatian midfielder Ivica Banovic scored twice as Freiburg moved away from the bottom three, while Cedric Makiadi and Mohammadou Idrissou scored inbetween his efforts.