The Spaniard didn't face a break point in his match against Dzumhur, who won his sole game after dropping the first five of the first set.
Nadal immediately outlined his intention to put his opponent under pressure, engineering eight break points in the teenager's opening two service games. At the beginning, I really think that he was serving big. Nadal would go on to win the set 6-1after a rallying sixth game where Dzhumhur finally got into trouble the score-sheet by the skin of his teeth.However, the rallying game had made Nadal more ruthless in the second set as he won it 6-0 to clinch the match in just 61 minutes.
He then avenged the defeat Denis Shapovalov inflicted previous year in Montreal, defeating the teenaged Canadian 6-4 6-1, after overcoming some spirited early resistance. "I think this was probably one of the three matches that I played this way in the past 12 months". Fognini got past Germany's Peter Gojowczyk 6-4, 6-4.
Zverev will next play ninth-seeded David Goffin, who was leading 6-2, 4-5 when Juan Martin del Potro retired because of a groin injury.
The Serbia will next play Spaniard Albert Ramos Vinolas who needed three sets to get past American eighth seed John Isner 6-7 (5/7), 7-6 (7/2), 7-6 (7/5).
Fourth seed Marin Cilic accounted for Frenchman Benoit Paire 6-3 6-4 while British No.1 Kyle Edmund was valiant in defeat to second seed Alexander Zverev, falling 7-5 7-6 (13-11).
In the women's tournament, Simona Halep's hold on the No. 1 ranking received a boost when American Madison Keys withdrew from their last-16 match due to a rib injury.
Thiem gearing up for Nadal rematch
Dane Wozniacki was given a scare by Latvia's Anastasija Sevastova before closing out the match 6-2, 5-7, 6-3.
This is the last major warmup for the French Open, which starts in 10 days.
On the Next Gen Arena Angelique Kerber faces the defending champion Elina Svitolina.
Also, U.S. Open champion Sloane Stephens held off a comeback from Estonian qualifier Kaia Kanepi in a 6-0, 5-7, 6-4 victory, and seventh-seeded Caroline Garcia defeated Timea Babos 6-3, 6-4.
Three-time victor Maria Sharapova ousted Daria Gavrilova 6-3, 6-4 and will play fifth seed and French Open champion Jelena Ostapenko who saw off Britain's Johanna Konta 2-6, 6-3, 6-4.
The victor will play Anett Kontaveit, who ousted 1999 champion Venus Williams 6-2, 7-6 (3).
Former world number one Karolina Pliskova took centre stage for smashing the umpire's chair with her racket instead of shaking hands after losing to Greece's Maria Sakkari after an incorrect line call.
Tesla Model 3 software updates revealed
Tesla's Autopilot system uses radar, cameras with 360-degree visibility and sensors to detect nearby cars and objects. The safety agency has yet to announce whether it will be looking into the Utah crash.
Senate Approves Overturning FCC's Net Neutrality Repeal
Republicans said the regulations threaten heavy-handed government intrusion that would stifle innovation on the internet. If that does manage to happen, the net neutrality rules the FCC enacted in 2015 would not be repealed next month.
Killed in Explosion at Office Building in California
The blast involved a building under renovation but the cause was not immediately known, according to authorities. The medical center is visited by a huge number of families, but none of the children were not injured.