Round 1 had 2507 players
Round 2 had 2057 players, which is 82.05% of the previous round
Round 3 had 1687 players, which is 82.01% of the previous round
Round 4 had 1398 players, which is 82.87% of the previous round
Round 5 had 1147 players, which is 82.05% of the previous round
Round 6 had 932 players, which is 81.26% of the previous round
Round 7 had 776 players, which is 83.26% of the previous round
Round 8 had 642 players, which is 82.73% of the previous round
Round 9 had 543 players, which is 84.58% of the previous round
Round 10 had 450 players, which is 82.87% of the previous round
Round 11 had 385 players, which is 85.56% of the previous round
Round 12 had 325 players, which is 84.42% of the previous round
Round 13 had 274 players, which is 84.31% of the previous round
Round 14 had 226 players, which is 82.48% of the previous round
Round 15 had 193 players, which is 85.40% of the previous round
Round 16 had 166 players, which is 86.01% of the previous round
Round 17 had 142 players, which is 85.54% of the previous round
Round 18 had 116 players, which is 81.69% of the previous round
Round 19 had 105 players, which is 90.52% of the previous round
Round 20 had 94 players, which is 89.52% of the previous round
Round 21 had 82 players, which is 87.23% of the previous round
Round 22 had 68 players, which is 82.93% of the previous round
Round 23 had 61 players, which is 89.71% of the previous round
Round 24 had 50 players, which is 81.97% of the previous round
Round 25 had 45 players, which is 90.00% of the previous round
Round 26 had 40 players, which is 88.89% of the previous round
Round 27 had 32 players, which is 80.00% of the previous round
Round 28 had 28 players, which is 87.50% of the previous round
Round 29 had 26 players, which is 92.86% of the previous round
Round 30 had 24 players, which is 92.31% of the previous round
Round 31 had 21 players, which is 87.50% of the previous round
Round 32 had 18 players, which is 85.71% of the previous round
Round 33 had 16 players, which is 88.89% of the previous round
It's cool when data bear out a hypothesis
Looks like the earlier rounds didn't have the expected advancement rates due to deadbeats, folks dropping out of the tournament and MAYBE something that had to do with skill differential. But now we're sitting right around 87.5% which would be the expected rate of advancement.