[halflings]

The paper doesn't mention any baseline, and so claims like "86% accuracy" are a bit useless: what if players do the same action 85% of the time? Then the model wouldn't be not predicting much. If on the other hand the most common action happens only 30% of the time, then that would be an incredibly strong result.

[littlestymaar]

I wonder what accuracy you'd get in a basketball game with the following constant predictor: “the player who has the ball will dribble”.

[bluGill]

Bump-set-spike. That is how all great players play. There are exceptions for things like they messed up; or are exploiting surprise to do something wrong hoping it works out.

At amateur level it is much harder to predict as nobody follow thee proper order, and in turn this makes it really easy for someone just a little better than average win.