Roger Federer has been consistently number 1 and Rafael Nadal has been consitently number 2

Nadal has been number 2 consistent and Roger has been number 1 consistent but Nadal has been number 2 consistent much longer than Roger Federer has been number 1 consistent because Roger suddenly got ill from mono virus in 2008. If Roger Federer had not got sick in 2008, Roger Federer could have been number 1 consistent as long as Nadal has been number 2 consistent. Roger has been number 2 consistent too after he got sad unfortunate sudden illness in 2008.