[4] Carrington played in eight out of twelve PTC events during the 2012–13 season, with his best results being last 32 defeat at the 2012 Scottish Open earned him a place in the EBSA Qualifying Tour Play-offs.

[9] Carrington came close to qualifying for the World Championship as he saw off Andrew Norman 10–5, Jack Lisowski 10–7 and Nigel Bond 10–5 to reach the final round, where Ryan Day beat him 10–5.

[11] He reached the second round of the Indian Open due to Marco Fu's withdrawal and was beaten 4–1 by Li Hang, with his solitary frame coming courtesy of a 138 break which was the highest of the tournament.

[12] In World Championship qualifying, Carrington defeated Joel Walker 10–6 and Peter Ebdon 10–7 to reach the final round for the second year in a row.

[16] At the Paul Hunter Classic Carrington knocked out Tony Drago, Mike Dunn, Matthew Stevens and Mark Davis to reach the quarter-finals of a professional event for the first time, where he lost 4–2 to Shaun Murphy.

[23] At the Welsh Open, Carrington defeated Sam Craigie 4–2, Wang Yuchen 4–2, Robin Hull 4–0 and Igor Figueiredo 4–1 to make it to the first ranking event quarter-final of his career and was 4–0 behind to Stuart Bingham.

[24] Carrington eliminated Alex Borg 10–2, Andrew Higginson 10–6 and Mark Williams 10–7 to qualify for his second World Championship and he played Liang Wenbo in the first round.