Four Main Tour graduates will be known by the end of the day’s play.
Q School Event 1 reaches its climax on Tuesday with the 16 remaining hopefuls vying for the coveted professional spots at Ponds Forge in Sheffield.
Perhaps unsurprisingly, 11 of the competitors left represent recently fallen pros who have just been relegated from the Main Tour after failing to break into the top 64 in the world rankings by the end of the 2020/21 snooker season.
More than 200 players may have set out with lofty aspirations a handful of days ago, but in reality the format favours the recent pros, especially now that a seeding system has been implemented for the first time this year.
Only three of the remaining players in Q School Event 1 will be trying to become professional for the first time in their careers – Lee Shanker, Sean Harvey, and Oliver Brown.
The latter, who reached the last 16 of the 2019 Gibraltar Open, takes on former Shoot Out king Michael Georgiou, while Shanker and Harvey meet Peter Lines and Jackson Page respectively.
Lines has counted Michael White among his conquests so far, with Page securing standout victories against Michael Judge and Soheil Vahedi.
Elsewhere, world seniors champion David Lilley has continued his good run of form and will be hoping to carry that forward into the first day of June when he takes on Ian Burns.
Chinese trio Yuan Sijun, Lei Peifan, and Bai Langning are a couple of wins away from securing an immediate return to the Main Tour as well.
Yuan faces Sydney Wilson, while Lei and Bai could cross paths in the final round if they both negotiate their fifth-round fixtures against Fraser Patrick and James Cahill.
Mitchel Mann and Duane Jones encounter each other in the other contest, each with aspirations of negating the need to feature in Q School Event 2 later this week.
A total of 14 players will graduate from the 2021 Q School with two-year Main Tour cards.
Click here to view the Q School Event 1 draw (Times: CET)