There are many great Straight Pool players who NEVER ran over 300 balls in their life! I don't know how many times John has done it so far but I strongly suspect he has more 300+ runs than anyone else in the history of Pool.
When he reaches the high 300's you can begin to sniff the record is in sight. How he is able to get back in the box and try again after all those near misses is beyond me. A lesser man would have given up long ago.
I think he has about 24 300+ runs now. At one point he had the 400 and no runs in the 300s, I believe.
He's at 140 right now. Broke from the end rail and ended on the foot rail but made the shot. The rack is well open.