Hey - I've been lurking for a while and never created a profile. Thought I would reply to this because I think I'd actually know enough to contribute without being an imposter!
I've been sports trading for a few years. I've spent most time on the horses, pre race and in play. Never been able to get consistent- for every huge green, I'd cancel it out with a big red and then lose all discipline. I dabble every now and then with small amounts, but horses can be very frantic.
Football has always been a bit meh for me, from a trading perspective despite it being my favourite and most knowledgeable sport.
Just started getting into tennis and really enjoying it. I can see the patterns that form already. My favourite strategies are laying servers in the WTA, backing favs when they're broken. Also enjoying laying the Set 1 winner if it's been very close and the winners serve has been under pressure a lot. The downsides on those trades are small, with huge potential upsides. I've been making a steady profit, but I need to get better at exiting at the rights times to maximise greens and minimise reds. All in all, trading tennis has been far more relaxing than horses.
Be good to continue the chat and hear about how your tennis trading is going.