What Bennett said. I key Arregui every time he is in the 1 spot in singles, regardless of who else is in that game and in what post. He is a totally different player when he has the serve...his weak returns put him in a defensive position right from the start.
At Milford...Liam was the guy to play in the 1 spot and avoid in most other spots...at least when he was playing in the late games..and the same thing with Jandro.
On the flip side is Larrea who I will key in the 2 spot in singles...that wicked right side return of serve is his best shot..and the 2 spot allows him multiple chances to come up again if he loses a point.