Bowling is the hardest one for me too... I think if I spent more time on baseball I might be able to go up a couple of hundred, but I'm not keen on baseball
The highest levels seem to be different for each sport, because in Tennis I need to win every rally to get any positive points now, so I think it may top out around 2400... unless you get more if you do it faster?.
Boxing I got 9 points in the last match, It may go up to 3000 max.








