There were also second round wins for fourth seed Stefanos Tsitsipas of Greece, fifth seed Alexander Zverev of Germany and seventh seed David Goffin of Belgium.
Speaking to Sky Sports while on international duty with Wales, Bale was asked about his future at the La Liga champions.
Djokovic will face Jan-Lennard Struff for a spot in the round of 16. The German needed one hour and 40 minutes to move past American Michael Mmoh 6-2, 6-2, 7-5.
Bale added that despite apparently not being in Zidane's plans, Madrid had stopped him moving last season.
WASHINGTON, Sept. 2 (Xinhua) -- Top seed Karolina Pliskova of the Czech Republic suffered a surprise defeat to France's Caroline Garcia in the second round of the US Open on Wednesday.
BEIJING, Sept. 3 (Xinhua) -- The International Basketball Federation (FIBA) and Chinese electronics enterprise TCL on Thursday announced an entirely new global partnership, following the relationship between the two parties at the FIBA Basketball World Cup 2019 last year in China.
Duan Liuyu sent a long-distance shot off the cross-bar in the 45th minute, while Marouane Fellaini saw his header hit the post in frustration in the 61st minute. Enditem
The Tour, which was moved from its original date in July due to the COVID-19 pandemic, ends in Paris on September 20. The next stage is a 191km ride from Le Teil to Mont Aigoual. Enditem
Parkinson's disease is a progressive nervous system disorder that affects movement. Symptoms start gradually, sometimes starting with a barely noticeable tremor in just one hand. Tremors are common, but the disorder also commonly causes stiffness or slowing of movement.
Asked whether he would be willing to return to England in the future, Bale replied, "If those options arise, it is something I'd look at for sure."
In other matches on Wednesday, Ceara beat local rivals Fortaleza 1-0, Atletico Goianiense drew 1-1 at Fluminense, Corinthians won 2-1 at Goias and Bragantino drew 1-1 at Athletico Paranaense. Enditem