Leverkusen host the Champions League favourites on Wednesday in the first leg of their last-16 tie but Saturday's wild draw may hurt their chances of reaching next year's competition.

The result leaves Leverkusen sixth, losing ground on top-four rivals Hoffenheim and RB Leipzig, who both won on Saturday.

Freiburg twice went ahead thanks to goals from Vincenzo Grifo and Yuito Suzuki but Leverkusen twice equalised through Christian Kofane and another superb free-kick from Alejandro Grimaldo.

Martin Terrier's goal had the visitors on track for victory but Matthias Ginter struck with four minutes remaining to level things up.

Elsewhere, RB Leipzig also looked set to drop points in the top-four race but forced Augsburg's Arthur Chaves into a stoppage-time own goal in a comeback 2-1 home win.

Robin Fellhauer gave Augsburg the lead after teammate Keven Schlotterbeck missed a penalty but Yan Diomande pulled one back for the hosts before Chaves scuffed a David Raum cross into his own net.

Leipzig's win took them to fifth, level on points with fourth-placed Stuttgart, who drew 2-2 at lowly Mainz.

Stuttgart fell behind to a Jae-Sung Lee strike but looked to have turned the match with goals to Ermedin Demirovic and Deniz Undav inside 61 seconds, before Danny da Costa nabbed a late equaliser for the hosts.

Hoffenheim took a  step towards a second ever Champions League qualification with a 4-2 win at last-placed Heidenheim to stay in outright third.

Alexander Prass bagged a first-half brace and Fisnik Asllani and Tim Lemperle scored for the visitors, while Luca Kerber scored a double for Heidenheim.

Elsewhere, Hamburg came from a goal down to win 2-1 at Wolfsburg, with all three goals coming from the penalty spot.

The defeat pushes second-last Wolfsburg, who were German champions in 2009, closer to a first-ever relegation

Later on Saturday, second-placed Borussia Dortmund can restore a six-point lead Hoffenheim with a win at Cologne.