The British number one secured his place in the last 16 with a straight-sets win over the 31-year-old this evening.
The second seed told BBC Radio 5 live: "I thought it was a high-level match, I struck the ball very well throughout. He served very well in the third set, I had very few chances but I got the break right at the end.
"I went for it. I hit a lot of winners, that was the most pleasing part. I hit the ball better from the back of the court. I hope I can keep playing better. I've been pushed in my matches, I've been tested and have come through it well.
"From what I have heard, people are putting even more pressure on me because of the way the draw has worked out. It's hard. It would be a lot easier if we just focused on one match at a time."