When aged 14, Maflin was invited, on behalf of TV Times magazine, to team up with former World Champion Dennis Taylor to raise money for the Leukaemia Research Fund at the 1998 Liverpool Victoria Charity Challenge event.

Maflin also appeared twice on BBC1's popular snooker game show series Junior Big Break: Stars of the Future in 1997, and winning the contestant the grand prize of a holiday in 1998.

Maflin had a great run in the non-ranking Masters qualifying tournament, beating Judd Trump and Jimmy White to reach the final before losing out on a wild card place in the event to Barry Hawkins.

Nevertheless, he recovered to enter the 2010 EBSA European Play-Offs and beat Alex Borg 5–2 in the final to secure his return to the Main Tour.

Maflin had a great start to the season as in June 2010, at the inaugural Player's Tour Championship event in Sheffield, he compiled his first professional 147 break in his first round match against Michał Zieliński.

Maflin then lost a decider to Xiao Guodong in the World Championship qualifying, a high quality match where each of the players made 2 centuries and multiple 50+ breaks.

[5] He took advantage of the new flatter qualifying system used in the German Masters, whereby he would only need to win two matches to progress to the main stage in Berlin, by beating Joel Walker and Tom Ford, dropping only a single frame in the process.

[5] In the latter event Maflin had arguably the best win of his career, by coming back from 0–3 to defeat the in-form Neil Robertson in a televised match.

He also reached the last 16 of the Scottish Open (scoring his second maximum break along the way) to help him finish 23rd on the Order of Merit, inside the top 26 who qualified for the Finals.

[7] There, Maflin had the best run in a ranking of his career by beating 1997 world champion Ken Doherty 4–2, Lawler and Ben Woollaston both 4–3 to reach the semi-finals.

2014 started well for Maflin, as he reached the last 16 of the German Masters for the second year in a row, having scored a win against world number two Mark Selby in the process; he however was beaten 5–1 by Joe Perry, bizarrely losing the last frame under the three miss rule before a single ball was potted.

[19] A return to form came for Maflin at the China Open, as he defeated Ali Carter, Mike Dunn, Robin Hull and Shaun Murphy to reach his second career semi-final, where he faced the reigning world champion Mark Selby.

[20] Maflin carried his good form into the World Championship qualifiers, as he convincingly beat David Grace 10–5 and Steve Davis 10–1 to once again reach the final round.

His first win at the venue stage of a ranking event this season came at the German Masters courtesy of overcoming Marco Fu 5–1 and then lost 5–3 to Luca Brecel.

[23] After knocking out Hammad Miah and Leo Fernandez, Maflin lost 4–2 to home favourite Mark Williams at the Welsh Open.

[26] Victories over Fang Xiongman, James Wattana, Mitchell Mann and Yan Bingtao at the Welsh Open saw him progress to the quarter-finals where he was defeated 5–2 by Robert Milkins.