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Dortmund are currently second in the top flight, sitting six points behind Bayern Munich, though that gap could stretch to nine with the leaders playing earlier on Saturday.

Kovac's side are on a six-game winning streak in the Bundesliga and unbeaten in 15 league outings in the competition in total as they have made up the gap on Bayern.

Having made up a lot of ground on Vincent Kompany's team, Dortmund are high on confidence, and Kovac wants to continue building on that.

"We're in good form at the moment; everyone can see that. We want to take this momentum with us to Leipzig and, of course, we want to get the three points," Kovac said.

"We're entering the final third of the season, which is crunch time. There's a lot at stake in the Bundesliga because many teams want to get into the Champions League, and some teams don't want to be relegated.

"The team is developing very positively. We're on the right track. The next game is the most important one, and that's Leipzig on Saturday."

Dortmund also come into this game on the back of a 2-0 win over Atalanta in the first leg of their Champions League play-off on Tuesday.

But unlike their visitors, Leipzig do not have European football to focus on as well, giving them longer to recover and prepare between matches.

Leipzig have won only one of their last five matches in all competitions, however, and have slipped down to fifth in the Bundesliga table, 11 points behind Dortmund, but Kovac refused to underestimate them.

"Leipzig have a very good team with a lot of potential," Kovac added. "They showed against Bayern, both in the return leg and in the cup, that they were close.

"We are not underestimating them despite their recent results. They can prepare every little detail, they have the necessary freshness, and they also have a lot of fit players. That's why we'll have to give 100% there too."