Borussia Dortmund 4 RB Leipzig 1: BVB come from behind to make winning start
Witsel - a close-season acquisition from Tianjin Quanjian - had already scored on debut in the DFB-Pokal on Monday and further endeared himself to the club's fans as they got their league campaign under way.
Jean-Kevin Augustin gave Leipzig the lead in the opening minute, sliding a shot beyond Roman Burki after a defensive mix-up by the hosts.
However, Mahmoud Dahoud pulled Dortmund level 20 minutes later when he adjusted his body brilliantly to head home a left-wing cross.
Marcel Sabitzer headed into his own net to hand Dortmund the lead five minutes from half-time, and Witsel's overhead kick from close range made it 3-1 at the break.
The second half looked set to pass without another goal being scored until Marco Reus capped off a counter attack by slotting past Gulacsi in stoppage time to record his 100th Bundesliga goal.
#Bundesliga goals and counting!
Congrats, @woodyinho! #BVBRBL pic.twitter.com/irMBaFUWxY
— Bundesliga English (@Bundesliga_EN) August 26, 2018
The result will come as a boost to new Dortmund boss Lucien Favre, coming as it did against one of the sides expected to join his in the hunt for Champions League places come the end of the season.
#BVBRBL 4-1 pic.twitter.com/GzoKStMF0X
— Borussia Dortmund (@BVB) August 26, 2018