All the rules for the Top 20 bet can be found here.

#Joueurnb%place moyenne
1Jannik Sinner26100.0 %1.4
2Carlos Alcaraz26100.0 %1.9
3Alexander Zverev26100.0 %3.0
4Taylor Fritz26100.0 %5.4
5Casper Ruud2596.2 %8.1
6Alex De Minaur2596.2 %9.1
7Holger Rune2596.2 %12.3
8Novak Djokovic2492.3 %7.9
9Stefanos Tsitsipas2492.3 %11.6
10Daniil Medvedev2388.5 %4.9
11Andrey Rublev2388.5 %11.3
12Tommy Paul2388.5 %12.7
13Grigor Dimitrov2284.6 %13.5
14Hubert Hurkacz1973.1 %13.7
15Ugo Humbert1973.1 %15.3
16Arthur Fils1869.2 %13.5
17Ben Shelton1869.2 %13.6
18Jack Draper1869.2 %14.1
19Lorenzo Musetti1661.5 %13.8
20Giovanni Mpetshi Perricard1557.7 %16.5
21Jiri Lehecka1246.2 %13.9
22Frances Tiafoe934.6 %14.6
23Felix Auger-Aliassime934.6 %15.0
24Karen Khachanov830.8 %16.3
25Tomas Machac726.9 %16.6
26Matteo Berrettini519.2 %15.8
27Jakub Mensik519.2 %17.2
28Sebastian Korda519.2 %17.6
29DoNotUse Joao Fonseca415.4 %20.0
30Andrei Medvedev311.5 %4.0
31Alejandro Tabilo27.7 %18.0
32Gael Monfils27.7 %18.5
33DoNotUse Kei Nishikori13.8 %12.0
34Cameron Norrie13.8 %14.0
35Alexei Popyrin13.8 %16.0
36Nuno Borges13.8 %18.0
37Flavio Cobolli13.8 %19.0
38Holger Vitus Nodskov Rune13.8 %19.0
39Sebastian Baez13.8 %19.0
40Tallon Griekspoor13.8 %20.0
LLTL
ATP
WTA/Double
Yearly
Race
attente
<= =>
Rookies
Leaderotron
Mega Patate
Big Lose
Clay
Grass
Hard indoor
Hard outdoor
attente