It's a game with all the ingredients that make football so attractive, and both teams can play football very well.
Just four minutes later, however, Franck Ribery doubled Bayern's lead, as he received the ball in acres of space on the left-wing, before cutting inside and finishing into the bottom-left corner. After taking the ball on the right, he ran into the visitors' penalty area before finding space on the edge of the D and shooting in off of the far post.
Bayern held off a late charge from Leverkusen, with a attractive free kick from James Rodriguez in the 91st minute all but ensuring a winning return to Bundesliga action for Die Roten.
Despite the absence of these key players, Bayern put in a fantastic performance and fully deserved their victory, showing the depth of talent in their squad. It was the Spaniard Martinez who smashed home from close range, after Arturo Vidal headed an Arjen Robben corner against Sven Bender, and the ex-Atletico Bilbao man reacted first to score the first goal of the Rückrunde.
However, amid their attempts to apply pressure during a competitive fixture, they were unable to prevent Rodriguez restoring the defending champions' two-goal lead and sealing all three points.
However, Jupp Heynckes came out and told the media that Bayern would not be selling any players during the transfer window. They've gone 12 Bundesliga games without defeat.
Bayern look certain to win the league once again.
"Joshua Kimmich will travel with the team, but I have to think about if he will start", Heynckes added.
Who can catch Die Roten?
However, Bayern were in control throughout and that particularly pleased their veteran coach as they march on towards a sixth successive league title.
After a slow start which saw manager Carlo Ancelotti relieved of his duties, Bayern have turned things around and returned to their familiar position atop the Bundesliga.