2024/2025:

Ronnie O'Sullivan vs Mark Allen [ - ] [ + ]

2008/2009
World Championship (18 Apr - 4 May 2009)
Rd 2		Ronnie O'Sullivan	11	-	13	Mark Allen
2009/2010
Welsh Open (25-31 Jan 2010)
QF		Ronnie O'Sullivan	5	-	2	Mark Allen
2010/2011
Masters (9-16 Jan 2011)
Rd 1		Ronnie O'Sullivan [9]	4	-	6	Mark Allen [11]
Rd 1	0-72, 115-15 (86), 37-63, 0-88 (88) 64-62 (64,56), 8-94, 69-18, 97-30 (66) 46-87 (87), 34-60
2016/2017
European Masters (3-9 Oct 2016)
Rd 2		Ronnie O'Sullivan [11]	4	-	2	Mark Allen [6]
Champion of Champions (7-12 Nov 2016)
SF		Ronnie O'Sullivan [3]	6	-	2	Mark Allen
SF	68-4 (51), 29-100 (100), 130-1 (130) 16-109 (109), 84-6 (73), 124-1 (124) 109-0 (109), 78-44 (59)
Scottish Open (12-18 Dec 2016)
Rd 4		Ronnie O'Sullivan [10]	4	-	2	Mark Allen [7]
2017/2018
Masters (14-21 Jan 2018)
QF		Ronnie O'Sullivan [1]	1	-	6	Mark Allen [8]
2018/2019
UK Championship (27 Nov - 9 Dec 2018)
Final		Ronnie O'Sullivan [1]	10	-	6	Mark Allen [7]
Final	Session 1: 54-63, 101-0 (101), 0-74 (74), 85-0 (85) 120-15 (54, 66), 76-15 (57), 73-12, 73-25 (65) Session 2: 74-25, 4-93 (56), 30-105 (105), 87-1 63-59 (RO 57), 0-144 (72,68), 9-93 (69) 78-0 (78) Referee: Marcel Eckardt This was O'Sullivan's 34th ranking title and 7th UK Championship title.
Players Championship (4-10 Mar 2019)
SF		Ronnie O'Sullivan [5]	6	-	0	Mark Allen [1]
SF	96-5, 77-27, 117-1 (84), 73-12, 71-44, 98-0 (59)
2020/2021
Champion of Champions (2-8 Nov 2020)
QF		Ronnie O'Sullivan	3	-	6	Mark Allen
QF	Allen had a max attempt in frame six that ended on 104
2021/2022
World Championship (16 Apr - 2 May 2022)
Rd 2		Ronnie O'Sullivan [2]	13	-	4	Mark Allen [15]	88 by O'Sullivan in frame 12 was a maximum attempt
Rd 2	This was O'Sullivan's record 71st win at the Crucible						88 by O'Sullivan in frame 12 was a maximum attempt
2024/2025
Snooker Championship (18-20 Dec 2024)
SF		Ronnie O'Sullivan	2	-	4	Mark Allen
SF	67-56 (MA 56), 53-54 (MA 53), 0-71 (56), 40-72 (60) 75-0 (75), 0-134 (134)