# Sean O'Sullivan (snooker player)

Sean O'Sullivan (born 29 April 1994) is an English former professional snooker player.

## Career

O'Sullivan turned professional after qualifying via Event 2 of the 2012 Q School and gained a two-year tour card for the 2012–13 and 2013–14 snooker seasons. In the event, he beat Christopher Keogan 4–1, Nick Dyson 4–0, Mohammed Al Shaikh from Bahrain 4–1 and Michael Wild 4–3, before seeing off Ryan Causton 4–1 in the quarter-finals.

### Debut season

O'Sullivan lost his first nine matches as a professional, picking up his first victory in the minor-ranking European Tour Event 3 by beating David Gilbert 4–3, before losing 4–2 to Jimmy Robertson. The tournament formed part of the Players Tour Championship events, with O'Sullivan playing in all ten tournaments, finishing 98th on the Order of Merit.
His best run of results came in qualifying for the China Open, where he defeated Craig Steadman and Alfie Burden, but then lost 5–3 to Rory McLeod. O'Sullivan's season ended when he was beaten 10–6 by Michael Wasley in the first round of World Championship Qualifying. He finished his first year on tour ranked world number 91.

### 2013/2014 season

O'Sullivan's only win at the venue stage of a ranking event during the 2013–14 season came at the UK Championship when he defeated Anthony Hamilton 6–4, before losing by a reverse of this scoreline to Noppon Saengkham in the second round. He dropped off the tour at the end of the season as he was ranked world number 102, well outside of the top 64 who retain their places. O'Sullivan entered Q School in a bid to win his place back, but lost in the last 32 in both events.

### 2014/2015 season

At the Riga Open in August 2014, O'Sullivan reached his first quarter-final in a professional event with wins over Jamie Burnett, Mark Joyce, Jak Jones and Mark Davis, before he was beaten 4–0 by Mark Allen. He also played in all three of the Asian Tour events and, thanks to a last 16 showing in the Xuzhou Open, he finished 22nd on the Asian Order of Merit which has earned him a new two-year main snooker tour card for the 2015–16 and 2016–17 seasons.

### 2015/2016 season

O'Sullivan dropped just two frames in reaching the last 16 of the Paul Hunter Classic where he lost 4–0 to Michael Holt. He would ultimately finish 38th on the European Order of Merit. In the main ranking events he qualified for the International Championship courtesy of a 6–3 win over Robin Hull, but lost 6–0 to Anthony McGill in the first round. O'Sullivan made five breaks of 50 or above to eliminate Kurt Maflin 6–3 in the first round of the UK Championship, before being defeated 6–4 by Matthew Selt. He could only win one more match after this and lost 10–5 to Ross Muir in the first round of World Championship qualifying.

### 2016/2017 season

A 4–1 win over Yu Delu qualified O'Sullivan for the 2016 Riga Masters and he beat Luca Brecel 4–0, before being unable to pick up a frame himself in the second round against David Gilbert. After losing eight of his next nine matches he knocked out Robbie Williams, Mark King and Mitchell Mann at the Scottish Open all by 4–1 scorelines to reach the last 16 of a ranking event for the first time. O'Sullivan led Yu 3–2, but lost 4–3. O'Sullivan entered Q School at the end of the season in order to attempt to remain on the tour. He lost 4–0 to Allan Taylor in the final round of the first event and 4–3 to Paul Davison in the fourth round of the second, but had done enough to earn a new tour card through the Q School Order of Merit.

### 2023/2024 season

O'Sullivan made his first ever career maximum at the 2023 European Masters in Germany in his Last 128 round against Barry Hawkins.

## Performance and rankings timeline

| Tournament | 2011/ 12 | 2012/ 13 | 2013/ 14 | 2014/ 15 | 2015/ 16 | 2016/ 17 | 2017/ 18 | 2018/ 19 | 2021/ 22 | 2022/ 23 | 2023/ 24 |
| Ranking | | | 91 | | | 90 | | 93 | | | 80 |
| Ranking tournaments ||||||||||||
| Championship League | Non-Ranking Event | Non-Ranking Event | Non-Ranking Event | Non-Ranking Event | Non-Ranking Event | Non-Ranking Event | Non-Ranking Event | Non-Ranking Event | A | RR | RR |
| European Masters | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | LQ | LQ | LQ | A | 1R | LQ |
| British Open | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | A | LQ | LQ |
| English Open | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | 1R | 1R | 1R | A | LQ | LQ |
| Wuhan Open | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | LQ |
| Northern Ireland Open | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | 1R | 1R | 2R | A | 1R | 2R |
| International Championship | NH | LQ | LQ | LQ | 1R | LQ | LQ | LQ | Not Held | Not Held | LQ |
| UK Championship | A | LQ | 2R | A | 2R | 1R | 1R | 1R | A | LQ | LQ |
| Shoot Out | Non-Ranking Event | Non-Ranking Event | Non-Ranking Event | Non-Ranking Event | Non-Ranking Event | 1R | 3R | 1R | A | 1R | 1R |
| Scottish Open | NH | MR | Tournament Not Held | Tournament Not Held | Tournament Not Held | 4R | 1R | 1R | A | 1R | LQ |
| World Grand Prix | Tournament Not Held | Tournament Not Held | Tournament Not Held | NR | DNQ | DNQ | DNQ | DNQ | DNQ | DNQ | DNQ |
| German Masters | A | LQ | A | LQ | LQ | LQ | LQ | LQ | A | LQ | LQ |
| Welsh Open | A | LQ | 1R | A | 1R | 2R | 1R | 1R | A | LQ | LQ |
| Players Championship | DNQ | DNQ | DNQ | DNQ | DNQ | DNQ | DNQ | DNQ | DNQ | DNQ | DNQ |
| World Open | A | LQ | A | Not Held | Not Held | LQ | LQ | LQ | Not Held | Not Held | 1R |
| Tour Championship | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | DNQ | DNQ | DNQ | DNQ |
| World Championship | A | LQ | LQ | LQ | LQ | LQ | LQ | LQ | LQ | LQ | LQ |
| Former ranking tournaments ||||||||||||
| Wuxi Classic | NR | LQ | LQ | LQ | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held |
| Australian Goldfields Open | A | LQ | LQ | LQ | LQ | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held |
| Shanghai Masters | A | LQ | LQ | A | LQ | LQ | LQ | NR | Not Held | Not Held | NR |
| Riga Masters | Tournament Not Held | Tournament Not Held | Tournament Not Held | Minor-Ranking | Minor-Ranking | 2R | LQ | LQ | Tournament Not Held | Tournament Not Held | Tournament Not Held |
| Paul Hunter Classic | Minor-Ranking Event | Minor-Ranking Event | Minor-Ranking Event | Minor-Ranking Event | Minor-Ranking Event | 1R | 1R | 1R | Tournament Not Held | Tournament Not Held | Tournament Not Held |
| China Championship | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | NR | LQ | LQ | Tournament Not Held | Tournament Not Held | Tournament Not Held |
| Indian Open | Not Held | Not Held | 1R | LQ | NH | LQ | 2R | LQ | Tournament Not Held | Tournament Not Held | Tournament Not Held |
| China Open | A | LQ | LQ | LQ | LQ | LQ | LQ | LQ | Tournament Not Held | Tournament Not Held | Tournament Not Held |
| Gibraltar Open | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | MR | 1R | 2R | 3R | A | Not Held | Not Held |
| WST Classic | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | Tournament Not Held | 1R | NH |
| Former non-ranking tournaments ||||||||||||
| Haining Open | Tournament Not Held | Tournament Not Held | Tournament Not Held | Minor-Ranking | Minor-Ranking | 4R | A | A | A | Not Held | Not Held |
| Six-red World Championship | NH | A | A | A | A | A | A | A | NH | LQ | NH |
Performance Table Legend :
| LQ | lost in the qualifying draw | #R | lost in the early rounds of the tournament (WR = Wildcard round, RR = Round robin) | QF | lost in the quarter-finals |
| SF | lost in the semi-finals | F | lost in the final | W | won the tournament |
| DNQ | did not qualify for the tournament | A | did not participate in the tournament | WD | withdrew from the tournament |
| NH / Not Held | NH / Not Held | NH / Not Held | NH / Not Held | means an event was not held. |
| NR / Non-Ranking Event | NR / Non-Ranking Event | NR / Non-Ranking Event | NR / Non-Ranking Event | means an event is/was no longer a ranking event. |
| R / Ranking Event | R / Ranking Event | R / Ranking Event | R / Ranking Event | means an event is/was a ranking event. |
| MR / Minor-Ranking Event | MR / Minor-Ranking Event | MR / Minor-Ranking Event | MR / Minor-Ranking Event | means an event is/was a minor-ranking event. |
* ↑ It shows the ranking at the beginning of the season
* 1 2 3 He was an amateur
* 1 2 3 New players on the Main Tour don't have a ranking
* ↑ Players qualified through Q School started the season without prize money ranking points
* ↑ The event was called the Players Tour Championship Grand Final (2011/2012-2015/2016)
* ↑ The event was called the Riga Open (2014/2015–2015/2016)

## Career finals
### Amateur finals: 1 (1 title)

| Outcome | No. | Year | Championship | Opponent in the final | Score |
| Winner | 1. | 2022 | Q Tour – Event 3 | Julien Leclercq | 5–2 |