His strong performances for the second team led to his senior debut in 2011, during the Clydesdale Bank 40, a one-day competition.

[5] He travelled with the Somerset team to compete in the 2011 Champions League Twenty20, where he played against the Warriors in the group stage and the Mumbai Indians in the semi-final.

[6] Dibble made an early season appearance in the County Championship in which he took three wickets against Warwickshire,[7][8] but suffered a rib injury during the game which ruled him out of the team.

[9] A recurring knee injury, tripartite patella, required an operation to repair, which resulted in him missing the rest of the 2012 season.

[10] He returned to the team in 2013, playing three one-day matches in which he took six wickets, including his career best bowling of 4 for 52 against Yorkshire.