Mark Deeks was an octochamp and semi-finalist in Series 65 and a contestant in the 30th Birthday Championship. He is an Apterite, famous for playing the one millionth game on Apterous on 16 May 2013, achieving a perfect maximum score vs Apterous Nude.
Deeks began his Countdown run on 12 July 2011 with a closely-fought victory over Jon Elmer, and although Elmer spotted the nine DISPERSER, Deeks caught up and prevailed on a crucial conundrum. He went on to win a further seven heats by more considerable margins, achieving the series' #1 seed spot with a total of 824 points, as well as the highest score of the series, 126 against Lesley Lewis.
Deeks was the favourite for the quarter-finals, and therein proved himself even further with a 116 – 21 deconstruction of David Butcher. However, his semi-final match was more closely fought. Carl Williams beat him with the words ADJUST and ADOPTERS. Williams was leading going into the crucial conundrum BLACRHINO, which he also solved to end Deeks' run in his tenth appearance.
Following his octochamp run, Deeks made his CO-event debut at Co:Lon 2011. He then appeared at COLIN 2012, CobliviLon and COEDI. He then won his first event by beating Kirk Bevins in the final of COLIN 2013. He also won CO:REA 2013, winning against Giles Hutchings in the final.
|#||Date||Type||Contestant 1||Score||Contestant 2||Presenters||Guest||Lex||Max|
|5305||12/07/2011||P||Jon Elmer||89 - 94||Mark Deeks||Jeff Stelling||Rachel Riley||John Stapleton||Susie Dent||124|
|5306||13/07/2011||P||Mark Deeks||114 - 73||John Maguire||Jeff Stelling||Rachel Riley||John Stapleton||Susie Dent||120|
|5307||14/07/2011||P||Mark Deeks||104 - 58||Joe Zender||Jeff Stelling||Rachel Riley||John Stapleton||Susie Dent||119|
|5308||15/07/2011||P||Mark Deeks||86 - 75||Taymar Pitman||Jeff Stelling||Rachel Riley||John Stapleton||Susie Dent||128|
|5309||18/07/2011||P||Mark Deeks||102 - 51||Sarah Axcell||Jeff Stelling||Rachel Riley||Mark Durden-Smith||Susie Dent||117|
|5310||19/07/2011||P||Mark Deeks||96 - 43||Linda Muchmore||Jeff Stelling||Rachel Riley||Mark Durden-Smith||Susie Dent||121|
|5311||20/07/2011||P||Mark Deeks||102 - 54||Shelley Worrall||Jeff Stelling||Rachel Riley||Mark Durden-Smith||Susie Dent||137|
|5312||21/07/2011||P||Mark Deeks||126 - 44||Lesley Lewis||Jeff Stelling||Rachel Riley||Mark Durden-Smith||Susie Dent||132|
|5392||8/12/2011||QF||David Butcher||21 - 116||Mark Deeks||Jeff Stelling||Rachel Riley||David Lloyd||Susie Dent||126|
|5396||14/12/2011||SF||Carl Williams||95 - 81||Mark Deeks||Jeff Stelling||Rachel Riley||Jon Culshaw||Susie Dent||119|
|5617||9/01/2013||30BP||Mark Deeks||103 - 108||Jack Hurst||Nick Hewer||Rachel Riley||Dave Myers||Susie Dent||120|