Given the supply and demand to attend live ATP tennis matches, the ticket prices for the Miami Open bordered on ridiculous ($500/seat!). Fortunately, we were able to find some greatly discounted tickets the evening before the round of 32.
It was somewhat surreal attending a major tennis tournament with the lack of fans wandering around. There were only about 500 people in attendance (vs normal of 35,000 people). Obviously the traffic and crowds were no problem. And there were two good ATP matches on the Grandstand Court: Isner vs Bautista-Agut and Medvedev vs Tiafoe.
One of the most important takeaways was the successful use of real-time electronic line calling. Rather than having a gaggle of officials and lines-people on the periphery of the court, the Miami Open used Eagle Eye in real-time to make the line calls (see photo below). There were no line-call challenges and the approach appeared to work very well. I can easily see this as the future of officiating in professional tennis.