| 2000-08-21 | 150 digits | World Memory Championship 2000 |
| 2001-08-23 | 585 digits | MSO Memory Championship 2001 |
| 2002-08-18 | 1035 digits | MSO Memory Championship 2002 |
| 2002-08-24 | 1040 digits | World Memory Championship 2002 |
| 2003-08-23 | 2850 digits | MSO Memory Championship 2003 |
| 2003-10-03 | 2975 digits | World Memory Championship 2003 |
| 2004-07-30 | 2820 digits | German Open Memory Championship 2004 |
| 2004-08-28 | 3705 digits | World Memory Championship 2004 |
| 2005-07-22 | 2236 digits | German Open Memory Championship 2005 |
| 2005-08-13 | 2670 digits | World Memory Championship 2005 |
| 2006-08-19 | 3710 digits | World Memory Championship 2006 |
| 2007-07-27 | 3915 digits | German Open Memory Championship 2007 |
| 2007-08-31 | 4140 digits | World Memory Championship 2007 |
| 2008-05-25 | 3055 digits | Derby Memory Championship 2008 |
| 2008-10-24 | 3730 digits | World Memory Championship 2008 |
| 2009-07-31 | 3610 digits | German Open Memory Championship 2009 |
| 2009-11-12 | 4105 digits | World Memory Championship 2009 |
| 2010-08-26 | 3620 digits | UK Open Memory Championship 2010 |
| 2010-11-03 | 3105 digits | World Memory Championship 2010 |
| 2010-11-12 | 3210 digits | German Open Memory Championship 2010 |
| 2011-08-25 | 3495 digits | UK Open Memory Championship 2011 |
| 2011-09-16 | 3115 digits | German Open Memory Championship 2011 |
| 2012-12-14 | 3090 digits | World Memory Championship 2012 |
| 2013-08-22 | 2050 digits | UK Open Memory Championship 2013 |
| 2013-11-30 | 2810 digits | World Memory Championships 2013 |
| 2014-08-21 | 2365 digits | UK Open Memory Championship 2014 |
| 2014-12-14 | 2565 digits | World Memory Championships 2014 |
| 2015-08-28 | 2295 digits | UK Open Memory Championship 2015 |
| 2018-09-22 | 2240 digits | German Open Memory Championship 2018 (n) |
| 2018-11-11 | 2735 digits (e) | 3rd European Open Memory Championship 2018 (n) |