I specifically talked to Jay Halfert at the BCA...he was one of the reliable sources that said Mark played about as good as anyone at one point, and was giving the 7 ball to tip top pros and getting there.
KMRUNOUT
Somebody sent a dvd to me a few years back when Mark Tadd and Mike Sigel were playing a match in some tournament. Tadd needed the 7 ball because Sigel beat him like a drum. I don't think the 7 would have even helped.