... So the actual field of players was 99 ...
That's the count I got. Here are the players listed by number of matches played. Pagulayan was listed for a while, but it appears he (and his opponent) never played a game. Lots of strong players went 1 and out.
1 -- 7 David Alcaide
2 -- 6 Arseni Sevastyanov
3 -- 5 Robbie Capito
4 -- 5 Jayson Shaw
5 -- 5 Bernie Regalario
6 -- 4 Roland Garcia
7 -- 4 Jefrey Roda
8 -- 4 Jeffrey Ignacio
9 -- 4 Harry Vergara
10 -- 4 Eric Navarrete
11 -- 4 AJ Manas
12 -- 3 Pijus Labutis
13 -- 3 Paul John Ladao
14 -- 3 Patric Gonzales
15 -- 3 Paolo Gallito
16 -- 3 Mickey Krause
17 -- 3 Michael Baoanan
18 -- 3 Mark Jerick Leyva
19 -- 3 Mario He
20 -- 3 Jonás Souto
21 -- 3 John Vincent Vicedo
22 -- 3 John Morra
23 -- 3 Jerwin Capili Samia
24 -- 3 Francisco Sánchez Ruiz
25 -- 3 Francisco Bustamante
26 -- 3 Emil Gangfløt
27 -- 3 Deanmark Castronuevo
28 -- 3 Anton Raga
29 -- 2 Yves Cabrito
30 -- 2 Ronel Nalaunan
31 -- 2 Ralf Souquet
32 -- 2 Pierfrancesco Garzia
33 -- 2 Naoyuki Oi
34 -- 2 Moritz Neuhausen
35 -- 2 Michael Feliciano
36 -- 2 Marvin Asis
37 -- 2 Lukas Fracasso-Verner
38 -- 2 Khalid Alghamdi
39 -- 2 Joshua Santino Arevalo
40 -- 2 Jerson Cumayas
41 -- 2 Jerico Banares
42 -- 2 Jeffrey De Luna
43 -- 2 Jaybee Sucal
44 -- 2 Fu Che Wei
45 -- 2 Fedor Gorst
46 -- 2 Elliott Sanderson
47 -- 2 Bryant Saguiped
48 -- 2 Baseth Mocaibat
49 -- 2 Angelo Ariola
50 -- 2 Albert Espinola
51 -- 1 Tsai Pei-Chun
52 -- 1 Tristan Deocareza
53 -- 1 Thorsten Hohmann
54 -- 1 Sun Yi Hsuan
55 -- 1 Sergio Lagunas Moreno
56 -- 1 Saud Kareem Alshammari
57 -- 1 Saldy Galliguez
58 -- 1 Ryan Kersten
59 -- 1 Ronny Oldervik
60 -- 1 Rodrigo Geronimo
61 -- 1 Roberto Gomez
62 -- 1 Ric Bejen
63 -- 1 Prince Delos Santos
64 -- 1 Paul John Ortega
65 -- 1 Mohammed Baabad
66 -- 1 Michael Abaño Sison
67 -- 1 Max Eberle
68 -- 1 Marlon Manalo
69 -- 1 Lee Vann Corteza
70 -- 1 Lauro Bongay
71 -- 1 Kunihiko Takahashi
72 -- 1 Kenney Nguyen
73 -- 1 Kenneth Garcia
74 -- 1 Kenneth Arpilleda
75 -- 1 Kelson Juan
76 -- 1 Joshua Agar
77 -- 1 Jordan Legaspi
78 -- 1 John Albert Refulle
79 -- 1 Johann Chua
80 -- 1 Jaycee Cordova Garcia
81 -- 1 James Aranas
82 -- 1 Ivan Sienes Folgar
83 -- 1 Horace Aynaga Angor
84 -- 1 Hassan Obeed Alqahtani
85 -- 1 Fahad Aldhayan
86 -- 1 Esteban Robles
87 -- 1 Emmanuel Delgado
88 -- 1 Edmar Cristobal Balboa
89 -- 1 Duong Quoc Hoang
90 -- 1 Drahcir Mauricio
91 -- 1 Dennis Orcollo
92 -- 1 Dennis M Po
93 -- 1 Denis Grabe
94 -- 1 Carlo Biado
95 -- 1 Billy Thorpe
96 -- 1 Billy Jay Garcia
97 -- 1 Amiel Leonor
98 -- 1 Alexis Ferrer
99 -- 1 Abdullah Alshammari
(for those who are wondering... grep, sed, awk, sort, uniq, bash)