Guardini was far less successful in 2013 but in 2014 .
Now in 2015 , the Italian appears to be back in the sort of form that could see Guardini challenge the best sprinters in the world .
Guardini was far less successful in 2013 but in 2014 and now in 2015 , the Italian appears to be back in the sort of form that could see him challenge the best sprinters in the world .