Un-Nooh's rise up the rankings continued as he ended the year 49th in the world. 2015–16 season Un-Nooh scored his first professional win at the 2015 Six-red World Championship in Bangkok, Thailand. He beat world champion Stuart Bingham and former UK Champion Judd Trump en route to a final with China's Liang Wenbo, which he won 8–2 in frames. Un-Nooh missed the final black in attempting to make a maximum break in his 6–2 loss to Neil Robertson at the UK Championship. He appeared on Channel 4 show TFI Friday a few days later to recreate the shot, and this time potted it. At the World Grand Prix, Un-Nooh eliminated Marco Fu 4–3 and Mark Allen 4–2 to reach the quarter-finals. He made breaks of 97, 84 and 74 to lead 3–1, but Ding Junhui took the match 4–3. Incredibly, in the final round of World Championship qualifying, Un-Nooh missed another 147 final black. He did make a 144 later on in the match, but his opponent Anthony McGill won 10–7. Un Nooh increased his ranking by 16 places over the year to end it as the world number 33. 2016–17 season Un-Nooh knocked out world number one Mark Selby 5–3 in the second round of the World Open, and then whitewashed Alan McManus 5–0 and beat Anthony McGill 5–2. In the semi-finals he suffered a 6–1 loss to Ali Carter. In the third round of the Paul Hunter Classic against Kurt Maflin, Un-Nooh finally made his first professional 147 break, after twice missing the final black the previous season. It earned him £40,000, and he won the match 4–1 before then narrowly beating Mark Allen and David Grace both 4–3, to reach the semi-finals of a ranking tournament for the second successive event. Un-Nooh lost 4–2 against Tom Ford. He struggled to build on this afterward, for he could not win a first-round match until the 2017 Welsh Open, in which he beat Ben Woollaston 4–0 and then saw off Ryan Day 4–1, before being defeated 4–1 by Barry Hawkins. After a last 16 finish at the Gibraltar Open his season ended on a low note as he lost in the first round of qualifying for the World Championship with a 10–9 defeat against Peter Lines. 2017–18 season At the invitational 2017 Six-red World Championship, Un-Nooh reached the final and was level at 2–2 against Williams before losing 2–8.