trading on tennis can offer some great opportunities. Todays semi final of Australian Open between Feder and Nadal offered such a situation. When Feder was 3-0* up with a single break he traded at 1.28/1.29 which is quite the odds at the end of the set. When Federer won the 1st set 7-6 he traded at 1.31/1.32.
Even if you did not green up you still did not lose money.
Be prepared for those opportunities.
13 hours ago