[7] In round 20 of the 2022 Betfred Super League season, Welsby kicked a drop goal in golden point extra-time to win the match for St Helens 13–12 against bottom placed Wakefield Trinity.

[10] In round 15 of the 2023 Super League season, Welsby made his 100th appearance for St Helens and scored two tries in the clubs 34–16 victory over rivals Wigan.

[13] On 20 December 2023, Welsby signed a four-year contract extension to remain at St Helens until the end of the 2027 Super League season.

[14] Welsby played 23 matches for St Helens in the 2024 Super League season including their golden point elimination playoff final loss against Warrington.

[16] Welsby played in all five matches for England at the tournament including the semi-final where he made a crucial handling error in golden point extra-time against Samoa.