Florian Wirtz scored in the 101st minute to seal a 3-2 victory for Leverkusen vs Gladbach.
Bayern Munich stay just two points behind Xabi Alonso's unbeaten side, with the two facing off next Saturday in Leverkusen.
Despite dominating domestically for the past decade, Bayern have won only one of their past seven against Gladbach.
Bundesliga: Borussia Monchengladbach Adi Huetter has tested positive for Covid-19 and his assistant coach will be in charge for their upcoming match vs Hertha Berlin.
Bundesliga: Robert Lewandowski cracked in his 20th league goal this season to give Bayern an early lead, but Gladbach hit back with two goals in four first-half minutes by Florian Neuhaus and Stefan Lainer
Bundesliga: With the prolific Erling Haaland fit and firing again, Borussia Dortmund hope to round out the year in style and close the gap on league leaders Bayern Munich.
Manchester City beat Borussia Moenchengladbach 2-0 to cruise into the quarter-finals of the Champions League.
The second leg of the Champions League Round of 16 match against Borussia Moenchengladbach has been moved to Budapest due to coronavirus travel restrictions.
Champions League: Manchester City won 2-0 at Borussia Moenchengladbach to close in on the quarter-finals.
Moenchengladbach ended their six-year wait to beat Borussia Dortmund when their 4-2 home win on Friday lifted them to fourth in the Bundesliga table.
For 27-year-old Romelu Lukaku it is the first time in his career that he has scored more than seven goals in his first 10 league games of the season.
Should Real Madrid suffer a humiliating group stage exit, ending their remarkable run as the only team to ever avoid elimination at this phase, coach Zinedine Zidane's future will be at risk.
Inter Milan, three-time European champions, are bottom of Group B with just two points from four games, six points behind leaders Borussia Moenchengladbach.
Bayern Munich earned their 13th straight win in all competitions to re-establish their seven-point lead over Borussia Dortmund at the top of the table with three matches left.
Bayern Munich will be confirmed champions with a win on Saturday if second-placed Borussia Dortmund lose at relegation-threatened Fortuna Duesseldorf.
Borussia Moenchengladbach, enjoying their best season since 1984, remain in fourth place - the final Champions League qualifying spot - on 56 points.
Barcelona thrashed Celtic 7-0, Arsenal drew 1-1 with Paris Saint Germain while Bayern Munich outclassed FC Rostov in the first round of matches of the 2016/17 Champions League
Sami Khedira went off injured after just nine minutes of the local Serie A derby against Torino, prompting fears he had torn a calf muscle.