The trio were amongst the 20 qualifiers for the Dutch Darts Masters, which takes place in Holland later this month.
PDC Unicorn World Youth Champion Hubbard came through a tough draw to progress.
The Norfolk ace saw off Michael Mansell 6-2 before defeating local rival Darren Webster to qualify.
Monk, who currently tops the Youth Tour Order of Merit, triumphed over Shaun Griffiths and Joe Cullen to win his place in Holland, while Andy Jenkins sealed his spot with a 6-1 victory over Jamie Lewis.
The top 32 players from the PDC Order of Merit who entered are placed directly into the first round draw, with the 20 UK Qualifiers joined by four players from a Home Nation Qualifier to be held on Rosmalen on Friday October 12 and eight players who will come from the European Qualifier in Bielefeld on Saturday October 13.
By Chris Murphy
Image courtesy of Lawrence Lustig/PDC