The first round of a Grand Slam is always tricky, but I am glad to get through it.
My first-round match against Illya Marchenko, the world number 95, was OK but it was hard going.
It was tough conditions. The on-court temperature was in the high 30s, which wasn't easy.
I didn't feel any extra pressure playing my first Grand Slam as the world number one. I felt nervous beforehand, but I get that before all Slams.
I always feel that bit of extra nerves and bit of extra pressure because these are the tournaments that often you work towards.