It has been a tough, tough few days but I am still here, I'm still in the tournament and now I'm into the quarter-finals.
As most people know, Nigel Sears was taken ill during Ana Ivanovic's match on Saturday - and Nigel is my wife's father. I didn't know anything about it until I walked off court after my match with Joao Sousa and when I heard, I went straight to the hospital to see him.
The good news is that Nigel flew home on Monday night. Everyone is just very happy that he is doing well and that he can be back home with his friends and family. 
I've never experienced anything like that during a tennis tournament before; they were quite exceptional circumstances.
I didn't deal with everything perfectly; I was not perfect on the court against Bernard Tomic on Monday, I was far from it. Practice on Sunday was not great but the next day I felt a bit better the longer the day went on. In those circumstances, it didn't matter who I played next, it would have been an extremely difficult match.
I don't think Bernie really gets the credit he deserves. It's almost like everyone is always questioning him all of the time, He's the highest ranked of the younger players in the top 20. He's not an easy guy to play against and he's incredibly talented. The way that he is able to play tennis is unique and I appreciate it because it's different.
Monday was the fourth time that I've played him and I can see the changes and improvements he has made each time we meet. I think he's returning the second serve better - that's always an important stat in matches. He was coming into the net a little bit more to finish points; he has very good hands, he doesn't miss loads of easy volleys so he can finish points at the net.  
Bernie and Nick Kyrgios are actually both quite similar, it's just on the court they become quite different; Bernie is obviously reserved and Nick is quite animated. They are both very nice away from the court. They are polite and respectful and they have a laugh - they've got a good sense of humour.
They are both extremely talented guys and I wouldn't be surprised if in the next couple of years one of them is in the semis or the final of a slam.
Both of them on the grass can be very dangerous and, for sure, I think Bernie's game suits it well. He hits the ball pretty flat and has very good timing - I think he likes the grass courts. Kyrgios the same. I don't think they like clay as much but I think at this event, Wimbledon and the US Open, both can have deep runs. Sooner or later they will break through.
I also think having Lleyton Hewitt around as their Davis Cup captain can only help them.
I speak to Lleyton a lot; I speak to him about those guys - Bernie and Nick and Thanasi (Kokkinakis) as well - because I do like them. And Lleyton can help - not just on the court but off it as well.
Lleyton had a great work ethic and I've seen him around the guys and it seems like he's very tolerant. But I would imagine he would push them very hard and he has, obviously, very high levels of expectation and professionalism and that will only rub off on them. And they all really like him. I think that is because he gives them maybe a little bit more freedom to be themselves.
But I have to concentrate now on the quarter-finals. I play David Ferrer and that is going to be a very, very difficult match.
David will be 34 this year and he's been around the game for a long, long time and been up at the top. He is proof that you don't have to retire when you're 31 or 32. As long as you still have the passion and dedication to work hard, and obviously if you can stay injury-free, it's possible. All it comes down to is really the body. If the body's OK, it's all about your passion.
David obviously works extremely hard. He's in good shape. He fights so hard in every single match. He's been rewarded for that with an unbelievably consistent career at the top of the game.