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The second highest seed who lost is 20th seed Kyrgios who withdrew with an injury again after going 6-3, 6-4 down to Herbert.
21st seed Karlovic also lost 8-6 in the 5th to Bedene after splitting the first four sets in tiebreaks.
Finally, 31st seed Verdasco lost to my countryman Anderson in four sets. That's a nice win for Anderson after struggling with injuries for some time and whose draw is quite good now with Wawrinka having lost.
The big four members Murray and Nadal both won easily in straight sets. I saw a little of both matches and both of them looked quite good but Nadal looked better and if it is a Nadal vs Murray SF I would put my money on Nadal.
I think Nadal will make the final. That is my early feeling but I guess he can still be tested by the likes of Kachanov, Muller, Cilic, and Murray. Murray plays Brown next while Nadal plays Young and I expect easy wins for both.
Tomorrow the bottom half is in action which includes Djokovic and Federer. Djokovic plays Klizan who he leads 3-0 while Federer plays Dolgopolov who he leads 3-0 too.
I see Del Potro is playing Kokkinakis who is a tough first round. Another first round to watch out for is Thiem vs Pospisil. Those are two potential upsets which I see tomorrow.
Let's see what Djokovic and Federer's form looks like early on. ...