A man, not a machine. For us old guys, we understand. His girlfriend is having a baby. Roger's tennis is not the most important thing in his life now. Mirka ran her life around him and his tennis and now everything is upside down. He finally gets married to her. He has to tend to her now. It can be very stressful tending to a pregnant woman (as us dads know). He's got stress about marriage, about baby, about mood swings and getting ice cream in the night, worries about whether everything will be right with the baby, wondering if they are doing all the correct things for it. Going to ultrasounds, naming the baby, making sure all the things you need for it are bought, are all weighing on his mind. He is a guy who cares a lot about things - and I'm sure he cares deeply about Mirka and his baby - but he is also someone who likes routine and predictability - AND THAT IS NOT HAPPENING NOW. This is why he is more emotional - crying at the Aussie Open, breaking his racket, falling apart in matches.