Norwegian striker Erling Haaland took his tally to 13 goals in 10 Bundesliga starts to fire Borussia Dortmund to victory at RB Leipzig on Saturday. Haaland's double in the 2-0 win secured Dortmund the runner-up spot in the German league with one game of the season remaining. It is the fifth time in eight years Dortmund have finished behind champions Bayern Munich, who <a href="https://www.thenational.ae/sport/football/bayern-munich-clinch-eighth-straight-bundesliga-title-amid-joyous-celebrations-in-empty-stadium-in-pictures-1.1034649">wrapped up an eighth successive title</a> on Tuesday. "A big three points to give us some space for the end of the season," said 17-year-old American forward Giovanni Reyna, who made his first start for Dortmund. "This was a big win to secure second place so we're all really happy." Leipzig stay in third place but are set to stay in the top four and earn a place in next season's Champions League. Fifth-placed Bayer Leverkusen had the chance to move level on points on Saturday, but Peter Bosz's side slumped to a disappointing 2-0 defeat to Hertha Berlin. Matheus Cunha and Dodi Lukebakio scored in each half to earn Hertha all three points and consign Leverkusen to their first blanks since December - also against Hertha. Leverkusen will need to win their last game of the season, at home against Mainz, and hope Borussia Monchengladbach lose to Hertha to claim a top four place. Gladbach kept their top four fate in their own hands with a 3-1 win at relegated Paderborn. Patrick Hermann opened the scoring for Gladbach after four minutes, before Sven Michel levelled nine minutes into the second half. A double from Lars Stindl - the first from the penalty spot - either side of Uwe Hunemeier's red card ensured a comfortable win for the visitors. Bayern Munich celebrated their title triumph with a 3-1 home win against Freiburg as Robert Lewandowski made history. After Joshua Kimmich put Bayern ahead, the Polish striker scored his 32nd and 33rd league goals to break Pierre-Emerick Aubameyang’s record for most goals in a Bundesliga season by a non-German national. In a battle for survival, Mainz cemented their Bundesliga status for another season by claiming a 3-1 win over Werder Bremen, who need to beat Cologne on the final day to avoid automatic relegation. Augsburg also confirmed their safety with a 1-1 draw at Dusseldorf. Schalke's alarming decline continued with a 4-1 defeat at home against Wolfsburg, while Hoffenheim thrashed Union Berlin 4-0 to keep alive their Europa League chances.