Which game do you consider most predictable where certainty to win of a favorite bet is relatively very high?
Which game looks most volatile to you?
For me one of the most volatile is baseball.
I do not think there is any option entirely predictable. Perhaps the individual games such as tennis where there are only two people to analyze.
Horse racing with a good knowledge of all the horses can be predictable too except when the new horses arrive.
From my point of view to predict sports betting is an art and a science without neglecting its share of intuition.
This is a good topic.