Roger Federer Chances to stay at the world number 1 before Wimbledon are :
Case 1 : If Nadal wins Rome then He'll comeback to World Number 1 again with different of 150 points ahead of Roger Federer .
Case 2 : We suppose Nadal wins all clay tournaments including Rome and Roland Garros then Roger must win Stuttgart to return to his real place at The #1
Case 3 : If Nadal lost a single match in the clay then Roger Federer will be World number 1 at least after RG.
Case 1 : If Nadal wins Rome then He'll comeback to World Number 1 again with different of 150 points ahead of Roger Federer .
Case 2 : We suppose Nadal wins all clay tournaments including Rome and Roland Garros then Roger must win Stuttgart to return to his real place at The #1
Case 3 : If Nadal lost a single match in the clay then Roger Federer will be World number 1 at least after RG.