Someone like tduong (first top ten), me (the previous two sets), ingle (last set and this one) are "new" players adding to the competition for top 10 every round. I think we're all experienced or returning players of course but newly in the mix competing for Primary. Even for oldman, I think this is only his fifth Primary set or so. And for crest something like 3-4. If all these players are capable of 100m and none of them were playing 5 sets ago, that would really increase the number of 100m and the difficulty of getting top 10.