At the end of the year if you had gambled 1 USD for each match you will achieve...11,94 USD as profit!
Considering an initial budget of 100 USD, you will earn 11,94% as pure ROI !
(In general, just for comparison, good tipsters are able to achieve between 5-10% of profit in a year)
What did you think? It is a good result? This profit will increase in the next years

?
Share your opinion...
No. For that, I'll put that $100 in the S&P 500, which will give me more or less the same without doing anything. I understand that those who like sports betting may see it as positive for its entertainment value, it's not all about profit.
As at 2018-2019, Sinner J. was not yet established to this level he is today, that is you can consider him as an underdog back then, so it is not surprising that bookmakers priced him with higher odds, I can bet that if you get a recent data the odds will be way lower because he is now the top player in ATP. The problem around this is whenever a player become an ATP top seed the odds are usually tightened by bookmakers so I wouldn't advice anyone to use this analysis to gamble.
That's the problem I've seen people talk about with sports betting, that the niches where some bettors had an edge in the past are no longer there because the bookmakers adjust the odds, and bettors have no choice but to find new niches or become unprofitable.