Eoin Monaghan
| Eoin Monaghan octochamp statistics | |
|---|---|
| Final position | Runner-up |
| Seeding | 2 |
| Points total | 898 |
| Conundrums solved | 6 |

Eoin Monaghan was an octochamp in and the runner-up of Series 63. He was a 14-year-old student at the Abbey Christian Brothers' Grammar School in Newry from Banbridge, County Down.
Monaghan debuted on 15 September 2010 with a drubbing against fellow debutant, David Rayner. He spotted PORTIERE, HEPTAGON and FORAGERS before the first ad break. He then solved the conundrum in 0.5 seconds to win by 108 – 40.
Seven further challenges did nothing to stop Monaghan achieving strong scores like 121 and 120 as well as on the way to an amazing octotal of 898, the seventh highest in the original 15-round format. He also became only the fourth person after Julian Fell, Craig Beevers and Andrew Hulme to score eight consecutive centuries in all his heat games. His total aggregate winning margin over his eight preliminary games is 544, a record that stood for 2.5 years before being broken by Andy Platt.
Monaghan returned for the series finals as the No. 2 seed in December. His quarter-final declarations of IMAMATE, VIRAGOES and TOTALISED helped him garner 127 points against Niall Young's 45. He then beat Daniel Pati in his semi-final, despite the absence of nine-letter words and a conundrum that foxed both players. Monaghan was finally defeated by Jack Hurst in the grand final but still delivered a strong performance as he was only beaten on one letters round, one numbers round and a 0.25-second conundrum solve from the latter.
After his appearances on Countdown, a new production rule of prohibiting people under the age of sixteen from appearing on the show was enforced by the team. This effectively made Monaghan the last ever contestant under that age to appear on the show. He did not return for 30th Birthday Championship.
On 8 August 2016 and 2 January 2017, he appeared on University Challenge and represented Oriel College, Oxford.
In 2020, Monaghan appeared in the second Numberists series of ZoomDown and reached the quarter-finals.
| Preceded by Nicki Sellars |
Series runner-up Series 63 |
Followed by Adam Gillard |
Episodes
| # | Date | Type | Contestant 1 | Score | Contestant 2 | Presenters | Guest | Lex | Max | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5111 | 15/09/2010 | P | David Rayner | 40 – 108 | Eoin Monaghan | Jeff Stelling | Rachel Riley | Alastair Stewart | Susie Dent | 119 | ||
| 5112 | 16/09/2010 | P | Eoin Monaghan | 105 – 66 | John Shaw | Jeff Stelling | Rachel Riley | Alastair Stewart | Susie Dent | 128 | ||
| 5113 | 17/09/2010 | P | Eoin Monaghan | 115 – 44 | Pauline Wedell | Jeff Stelling | Rachel Riley | Alastair Stewart | Susie Dent | 131 | ||
| 5114 | 20/09/2010 | P | Eoin Monaghan | 121 – 35 | Dave Rudd | Jeff Stelling | Rachel Riley | Dave Spikey | Susie Dent | 130 | ||
| 5115 | 21/09/2010 | P | Eoin Monaghan | 100 – 16 | Clive Myers | Jeff Stelling | Rachel Riley | Dave Spikey | Susie Dent | 125 | ||
| 5116 | 22/09/2010 | P | Eoin Monaghan | 120 – 60 | Les Morrell | Jeff Stelling | Rachel Riley | Dave Spikey | Susie Dent | 129 | ||
| 5117 | 23/09/2010 | P | Eoin Monaghan | 116 – 61 | Angela Monk | Jeff Stelling | Rachel Riley | Dave Spikey | Susie Dent | 133 | ||
| 5118 | 24/09/2010 | P | Eoin Monaghan | 113 – 32 | Pete Hawksworth | Jeff Stelling | Rachel Riley | Dave Spikey | Susie Dent | 136 | ||
| 5173 | 10/12/2010 | QF | Eoin Monaghan | 127 – 45 | Niall Young | Jeff Stelling | Rachel Riley | Amanda Lamb | Susie Dent | 130 | ||
| 5177 | 16/12/2010 | SF | Eoin Monaghan | 108 – 77 | Daniel Pati | Jeff Stelling | Rachel Riley | Paul Zenon | Susie Dent | 122 | ||
| 5178 | 17/12/2010 | GF | Jack Hurst | 113 – 85 | Eoin Monaghan | Jeff Stelling | Rachel Riley | Paul Zenon | Susie Dent | 114 | ||