The fourth event of the 2025/2026 Welsh Snooker U18 Series was held on Sunday 29 March at Amlwch Snooker Club on Anglesey, with seven players split across two round-robin groups ahead of a four-player knockout. Riley Powell took the title with a 3-0 win over Sion Stuart in the final, capped by a 131 century break. Group matches and semi-finals were played as best-of-three frames; the final was a best-of-five.
Riley Powell set the tone early, sweeping all three of his Group A matches without dropping a single frame to finish on a perfect 6-0 frame record. William Gwinnell took second place on two wins from three, ahead of Logan Rawlings in third. George Sykes completed the group on a tough day, failing to win a frame across his three matches.
Group B produced a cleaner hierarchy across its three players. Sion Stuart came through unbeaten to top the group, with Joel Williams qualifying in second ahead of Rio Chung.
The semi-finals paired the group winners against the runners-up. Powell dispatched Williams 2-0 to book his place in the final, while Stuart edged a tight battle with Gwinnell 2-1, the only three-frame match of the knockout stage.
The final was all Powell. He took the first two frames cleanly before closing out a 3-0 win with the display of the day — a 131 century, the tournament's only ton and the highest break of the event. Powell finished with five recorded breaks of 30 or above, including a 74 and a 64.
Riley Powell's 131 in the final was the tournament's only century and comfortably its highest break. He was the day's most prolific break-builder, registering five breaks of 30 or above across his run to the title.
| Player | Breaks |
| Riley Powell | 131, 74, 64, 54, 53 |
| William Gwinnell | 53 |
| Sion Stuart | 49 |
| Rio Chung | 35, 31 |
Riley Powell's Event 4 title extends his lead at the top of the 2025/2026 Welsh Snooker U18 Series ranking, moving him to 300 points and clear of the field. Joel Williams and Sion Stuart are level on 180 in the chasing pair, with William Gwinnell and Ashton Williams close behind on 170.
| Rank | Player | Points |
| 1 | Riley Powell | 300 |
| 2= | Joel Williams | 180 |
| 2= | Sion Stuart | 180 |
| 4= | William Gwinnell | 170 |
| 4= | Ashton Williams | 170 |
| 6= | Logan Rawlings | 150 |
| 6= | Reuben Gingell | 150 |
| 8 | Jack Taylor | 140 |
Looking Ahead — U18 Series Championship
The series concludes at the 2025/2026 Welsh Snooker U18 Series Championship on Saturday 18 April 2026 in Aberdare. Riley Powell enters the final event as ranking leader on 300 points, with Joel Williams and Sion Stuart level on 180 in the chasing pair and Gwinnell and Ashton Williams one step behind on 170.