Has Martin Johnson's reputation been tarnished?

Question

Martin Johnson was the most ferocious of all the World Cup-winning lions in 2003; but since he accepted the job as England head coach, his reputation seems to have become somewhat tarnished after a less than successful spell in charge of the national team.

A good Six Nations campaign will be the only saving grace for the head coach, who could well face the sack before the 2011 World Cup if results and performances don't significantly improve.