Good luck whoever is betting on today's tennis.
I am out :-P
You can never go with the way the odds look especially with the tennis matches. I have learned this in the past since upsets can happen due to a bad linesman or chair empire call which can cost the player the match.
Even the player not calling out a challenge to a ball called in/out can make them lose a match. It has happened to me many times betting on the likes of djokovic and federer.