Borussia Dortmund midfielder Kevin Grosskreutz thinks people would be "crazy" not to believe in his side's chances of winning the Bundesliga.
Dortmund recorded a 4-1 win over Hannover on Saturday.
With six games of the season remaining, the Westphalians have a seven-point cushion over Bayer Leverkusen and Grosskreutz became the first member of Jurgen Klopp's team to openly talk of the title.
"We deserve to bring the title home," he said. "Whoever doesn't believe that any more is just crazy."
Klopp was more circumspect, telling the club's website: "It was a very important win. Everybody who is interested in us feels that.
"After we went 2-1 up there was a glorious atmosphere in the stadium."
Rising star Mario Gotze prompted scenes of delirium with his stunning equaliser, but Klopp avoided comparisons with Barcelona star Lionel Messi.
"I would prefer it if people would just not get so carried away and if he could carry on working in peace and quiet," he said.
"Comparing him with Messi is not necessary. We all know what he is capable of and that he is an important player for us."