Arjen Robben insists the Bundesliga title race is far from over despite FC Bayern München having pulled clear of their rivals on Matchday 13.
That pair of results means the reigning Bundesliga champions have , one more than at the same stage last season.
Pep Guardiola's men eased over the finish line to claim a third successive top-flight crown in 2014/15, but Robben believes a record-breaking fourth consecutive Meisterschale is not yet a racing certainty.
'Fight to the end'
"It's good, but it's also nothing more than that," said the Netherlands midfielder of Bayern's lead in the title race. "We have to keep only thinking about ourselves. I think it'll be a fight right to the end. Dortmund have a great team and the defeat in Hamburg changes nothing."
He added: "They lost the game and dropped points. In that case, you have to take advantage, exactly as we did against Schalke."
Despite the two-goal winning margin at the VELTINS Arena, the victory was arguably Bayern's most hard-fought of the campaign yet.
It was not until Javi Martinez's header 21 minutes from time that the hosts' resistance was finally broken as Bayern showed they can also get tough when the going does.
"It also has to be like that, otherwise it doesn't work," Robben explained. "That was also the coach's message before the game: If you want to achieve something, you always have to give your all."
He continued: "We had a phase in the first half where we lost control a little bit. We simply allowed Schalke to counter-attack too easily. It was much better in the second half, we controlled the ball more. We made the ball do the running, and deserved the win in the end."