There is a wide range of possibility to the answer to this which depends on variables.

Type of game (8 ball, 9 ball, one pocket) as well as table size (7', 8', 9')
What is the spot the pro player giving the rec player? This is a very big key factor to the answer to this.
When you say rec player that is decent that may need to be elaborated as decent to me might very well not be close to decent to you.
Is the rec player betting their own and are they a gambler (might help determine how they play under pressure)

Regardless of the answer to these questions most likely the pro player is smart enough to not trap himself in a game that he will lose or if he loses he will barely lose unless he completely underestimates the skill of the rec player or maybe even the money doesn't count he just likes to outrun the nuts.

I used to play a ton of pool so I have seen all kinds of action with spots etc.

Same with me too. We had a great scene in western NC back in the early 90's. Every night of the week there was semi pro action within 50 miles from where I lived. I miss those days!!!

In one pocket the decent player would win zero of ten games.
In eight ball the decent player would win maybe one of ten. Possibly two.
In nine ball the decent player would win one to three out of ten. Maybe.

In all these scenarios, the pro could easily win 10 of 10. The decent guy would need lots of luck to book any wins.

Not as LMAO as you might think.
Many tournaments and leagues ( including BCA) currently use the "rack your own" rule.

In one pocket its pretty easy to leave you're corner's ball slightly off and will go in easily on the break. That is why you rack your opponents balls! lol

You obviously don't know the strategy of one pocket or you're a bad player. One pocket is all defense.

How is starting the game 1 point ahead possibly a bad thing?

I don't play much one pocket, so I can't give first hand info on this, but I did speak to an expert in this area. He plays in our Thursday night poker game and is also in the One Pocket Hall Of Fame. He said either way is acceptable, "rack your own" or "rack for your opponent." Both parties agree which method to use before the match begins. He prefers the "rack for your opponent " option.

when i grow up i want to be like jean-robear

So he can lay the ball[s] for his! pocket right? LOL

Third party racking is always the best way, and don't they check before brake? if not they are dumb

Hahahahahaha!!!

I know plenty about pool and one pocket. Everyone uses pretty much the same break in one pocket. Same cue ball placement, same speed, same spin, same 1st strike area of the racked balls, etc.

By using the same break as always with the corner ball (nearest to your pocket) slightly off a firm rack, it will go in and you can continue shooting.

How do you think this is not a huge advantage?

Obviously if you agree to play rack your own balls then the opponent should verify the rack before the break. That did not happen in the video. JRB was probably getting a drink or in the bathroom or whatever.

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