Don't be so sure.
B18 has only played 6 picks, for 5 x 4 pointers, and 1 x 0 pointer.
This means his score reacts more to a 0 now, than anyone else.
If B18 goes 3 picks again next week, and scores all 4's or 0's, then:
3 x 4's, 0 x 0's he's 3.56
2 x 4's, 1 x 0's he's 3.11
1 x 4's, 2 x 0's he's 2.67
0 x 4's, 3 x 0's he's 2.22
You don't need to catch him in one week, but you are currently 17/8. If you played 3 x 4's next week, you are 29/11, which is 2.64. That means you are a chance to be in front of him, or just behind him, as soon as next week! You have 4 weeks to catch him!