Tuesday Tour Championship Motivation Question

I'm asking this as I have not paid attention to this before, but it was brought up to me yesterday. 

With the Ryder Cup starting next week, at what point of this current Tour Championship tournament do players who are on the Ryder Cup teams pack it in this week if they are out of contention?  Or is this week to important to everyone so they will fight tooth and nail until the end? Thank you in advance for any insight. 

I wouldn't think ANYONE on the Ryder Cup team would "pack it in" this week. 

There's still a lot of money on the line for not only this week's Tourny but the FEDEx cup as a whole

Agree but chump change for a lot of these golfers LOL!