The world number one was rarely troubled by the German and barely raised a sweat, cruising into the second round with an ominous display for rivals looking for any early-season weaknesses from Djokovic after his dominant 2015.
"It was a very good start," Djokovic told reporters afterwards.
He said he was untroubled by the blustery and relatively cold weather in Doha, with temperatures reaching 17 degrees Celsius.
"Considering the weather conditions and everything, I think it was a good performance from my side.
