Upset: Mo Farah had to settle for second place on his return to racing at the Vitality London 10,000 on Monday
(Picture: Getty Images)Sir Mo Farah suffered a shock defeat on his return to competitive action on Monday.
The four-time Olympic champion lined up in the Vitality London 10,000, his first outing for 11 months since suffering a foot injury as he failed to seal a spot at the delayed Tokyo Games last summer.
