By Alan Smith World-record holder Tigist Assefa expects to run another rapid time in her London Marathon debut but the Ethiopian star says victory is far more important than the clock. The 27-year-old stunned athletics by running 2:11:53 in Berlin last September. And while that was in a mixed race, allowing her to use a pack of male runners for pacing, Assefa believes the women’s only record of 2:17:01 is primed to fall on Sunday morning. The deepest field of all time has been assembled, with three of the four fastest women in history and seven who have run under 2:17:30. But asked if her sigh…