Xabi Alonso was not impressed with Bayer Leverkusen's performance in the win over Heidenheim but said points are all that matter at this stage of the season.

Leverkusen needed a stoppage-time winner from Emiliano Buendia to snatch a 1-0 victory and stay six points behind Bundesliga leaders Bayern Munich with six games to play.

The Werkself are now unbeaten in their last 31 Bundesliga away games (W22 D8), the second-longest run in league history (33 by Bayern from April 2012 to March 2014). 

Heidenheim had more chances (with 10 shots to Leverkusen's six), with both teams only having two efforts on target throughout.

The hosts also hit the woodwork through Benedikt Gimber in the first half, though Heidenheim could take neither of their 'big' chances.

Leverkusen's chances of winning the Bundesliga sit at just 3.3% despite their victory, according to the Opta supercomputer, with Bayern the overwhelming favourites at 96.7%.

But Alonso is determined to fight to the last matchday, noting that the win over Heidenheim kept them in touch.

"At this point in the season, all the results and points count, and we know our situation," Alonso told reporters.

"If we wanted to fight, we had to win today, and we did. It's not the moment to ask about the 'how' but rather about the 'what'.

"It was another game with a lot of emotions right until the end. It's a difficult game to play in, and it wasn't our best performance.

"We had problems, but after Tuesday [a DFB-Pokal semi-final loss to Arminia Bielefeld] we wanted to celebrate a victory again."

There was little to split the sides throughout for the most part, with Leverkusen just edging possession (51.4%), while they had 15 touches in the opposition box compared to Heidenheim's 16.

In a tight game, Jonathan Tah says it was Leverkusen's faith that got them over the line.

"We really did not play a good game and never got into our rhythm," Tah said.

"In the end, we had that bit of luck because we kept at it and kept believing in ourselves."

Leverkusen host Union Berlin next Saturday, while Bayern welcome Borussia Dortmund in Der Klassiker in their next Bundesliga match.