Ryder Cup - ball choice

In Foursomes how do they select which ball to use if the players have a different ball choice/sponsor ?  or do we assume all Pros use Pro Vs now

Darren,

Not all pros use the pro V1, for example Furyk uses a Srixon ball & I'm sure a couple of the Europeans use a different make. I think the desicion must be made between the 2 players but they probably take into account the softness/hardness of the ball, the course set up etc

John.

I know on the last one Tiger's playing partner teed off with his Nike on par 4's so that Tiger could approach the green with his own ball.  On the par 3's and par 5's where they couldn't reach in two they used his partner's.  The idea was that the player playing the approach knew how hi ball would feel and behave. 

On Radio Five they said in most pairings the player teeing off was using his own make of ball and it was within the rules to switch make of balls between holes as long they did not change them during a hole.