2015 3:28.93 Monaco (Stade Louis II) 17 JUL
2013 3:28.81 Monaco (Stade Louis II) 19 JUL
2012 3:34.66 Los Angeles (OC), CA 18 MAY
2009 3:33.98 Monaco (Stade Louis II) 28 JUL
2008 3:39.66 Birmingham, GBR 13 JUL
2007 3:46.50 Birmingham, GBR 07 JUL
2006 3:38.02 Rieti 27 AUG
2005 3:38.62 Zürich 19 AUG
2003 3:43.17 Eton 14 JUN
This is the type of progression that nobody has ever seen in an athlete. After all, even if we grant that Monaco is a fast place to run, Mo could barely crack 3:34 in 2009 in his prime at age 26. And for those who say he did not train hard, Mo had been training with Craig Mottram and a group of Kenyans including Micah Kogo as early as 2005.