Bayern Munich began their title defense with a 3-1 win over Bayer Leverkusen after being awarded a penalty thanks to the video assistant referee (VAR) system.
Bayern, who were missed a host of key players, were still able to lead 2-0 by half-time thanks to goals from debutants Niklas Sule and Corentin Tolisso, but were placed under pressure by Leverkusen early in the second half.
However, their star striker Lewandowski appealed for a penalty against the run play, a request that was fulfilled after referee Tobias Stieler consulted the VAR system which has been recently introduced to the German top flight.
Initially unsure, Stieler awarded a spot-kick after consulting the video referees who were based in Cologne, which the Polish striker converted to make it 3-0.
Leverkusen then got a consolation goal through Admir Mehmedi, who lashed in a 20-yard drive, but it was not enough to stop Bayern, who have now won 18 and drawn five in their home stadium at the Allianz Arena since losing to Mainz in March 2016.
Elsewhere, last season’s Bundesliga runners-up RB Leipzig began their campaign with a 2-0 defeat to Schalke 04.
Nabil Bentaleb started Schalke’s win by converting a penalty just before the break, while Yevhen Konoplyanka did the rest, curling home in style to seal the victory.