<Tr> <Th> </Th> <Td> Ranked number 1 during every week of the calendar year </Td> </Tr> <Tr> <Th> </Th> <Td> Active players </Td> </Tr> <Table> <Tr> <Td> <Table> <Tr> <Th> Year </Th> <Th> Player </Th> <Th> Ref (s) </Th> </Tr> <Tr> <Td> 1973 </Td> <Th> Ilie Năstase </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Jimmy Connors (1 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Jimmy Connors (2 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 1976 </Td> <Th> Jimmy Connors (3 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 1977 </Td> <Th> Jimmy Connors (4 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 1978 </Td> <Th> Jimmy Connors (5 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 1979 </Td> <Th> Björn Borg (1 / 2) </Th> <Td> </Td> </Tr> <Tr> <Td> 1980 </Td> <Th> Björn Borg (2 / 2) </Th> <Td> </Td> </Tr> <Tr> <Td> 1981 </Td> <Th> John McEnroe (1 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 1982 </Td> <Th> John McEnroe (2 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> John McEnroe (3 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 1984 </Td> <Th> John McEnroe (4 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 1985 </Td> <Th> Ivan Lendl (1 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 1986 </Td> <Th> Ivan Lendl (2 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Ivan Lendl (3 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Mats Wilander </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Ivan Lendl (4 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Stefan Edberg (1 / 2) </Th> <Td> </Td> </Tr> <Tr> <Td> 1991 </Td> <Th> Stefan Edberg (2 / 2) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Jim Courier </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Pete Sampras (1 / 6) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Pete Sampras (2 / 6) </Th> <Td> </Td> </Tr> <Tr> <Td> 1995 </Td> <Th> Pete Sampras (3 / 6) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Pete Sampras (4 / 6) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Pete Sampras (5 / 6) </Th> <Td> </Td> </Tr> <Tr> <Td> 1998 </Td> <Th> Pete Sampras (6 / 6) </Th> <Td> </Td> </Tr> <Tr> <Td> 1999 </Td> <Th> Andre Agassi </Th> <Td> </Td> </Tr> <Tr> <Td> 2000 </Td> <Th> Gustavo Kuerten </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Lleyton Hewitt (1 / 2) </Th> <Td> </Td> </Tr> <Tr> <Td> 2002 </Td> <Th> Lleyton Hewitt (2 / 2) </Th> <Td> </Td> </Tr> <Tr> <Td> 2003 </Td> <Th> Andy Roddick </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Roger Federer (1 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 2005 </Td> <Th> Roger Federer (2 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 2006 </Td> <Th> Roger Federer (3 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 2007 </Td> <Th> Roger Federer (4 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 2008 </Td> <Th> Rafael Nadal (1 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 2009 </Td> <Th> Roger Federer (5 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Rafael Nadal (2 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 2011 </Td> <Th> Novak Djokovic (1 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 2012 </Td> <Th> Novak Djokovic (2 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 2013 </Td> <Th> Rafael Nadal (3 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 2014 </Td> <Th> Novak Djokovic (3 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 2015 </Td> <Th> Novak Djokovic (4 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 2016 </Td> <Th> Andy Murray </Th> <Td> </Td> </Tr> <Tr> <Td> 2017 </Td> <Th> Rafael Nadal (4 / 4) </Th> <Td> </Td> </Tr> </Table> <P> </P> </Td> <Td> <Table> <Tr> <Th> Number of Years as Year - end No. 1 </Th> <Th> Player </Th> </Tr> <Tr> <Td> 6 </Td> <Td> Pete Sampras </Td> </Tr> <Tr> <Td> 5 </Td> <Td> Jimmy Connors </Td> </Tr> <Tr> <Td> Roger Federer </Td> </Tr> <Tr> <Td> </Td> <Td> John McEnroe </Td> </Tr> <Tr> <Td> Ivan Lendl </Td> </Tr> <Tr> <Td> Novak Djokovic </Td> </Tr> <Tr> <Td> Rafael Nadal </Td> </Tr> <Tr> <Td> </Td> <Td> Björn Borg </Td> </Tr> <Tr> <Td> Stefan Edberg </Td> </Tr> <Tr> <Td> Lleyton Hewitt </Td> </Tr> <Tr> <Td> </Td> <Td> Ilie Năstase </Td> </Tr> <Tr> <Td> Mats Wilander </Td> </Tr> <Tr> <Td> Jim Courier </Td> </Tr> <Tr> <Td> Andre Agassi </Td> </Tr> <Tr> <Td> Gustavo Kuerten </Td> </Tr> <Tr> <Td> Andy Roddick </Td> </Tr> <Tr> <Td> Andy Murray </Td> </Tr> </Table> </Td> </Tr> </Table> <Tr> <Td> <Table> <Tr> <Th> Year </Th> <Th> Player </Th> <Th> Ref (s) </Th> </Tr> <Tr> <Td> 1973 </Td> <Th> Ilie Năstase </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Jimmy Connors (1 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Jimmy Connors (2 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 1976 </Td> <Th> Jimmy Connors (3 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 1977 </Td> <Th> Jimmy Connors (4 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 1978 </Td> <Th> Jimmy Connors (5 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 1979 </Td> <Th> Björn Borg (1 / 2) </Th> <Td> </Td> </Tr> <Tr> <Td> 1980 </Td> <Th> Björn Borg (2 / 2) </Th> <Td> </Td> </Tr> <Tr> <Td> 1981 </Td> <Th> John McEnroe (1 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 1982 </Td> <Th> John McEnroe (2 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> John McEnroe (3 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 1984 </Td> <Th> John McEnroe (4 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 1985 </Td> <Th> Ivan Lendl (1 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 1986 </Td> <Th> Ivan Lendl (2 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Ivan Lendl (3 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Mats Wilander </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Ivan Lendl (4 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Stefan Edberg (1 / 2) </Th> <Td> </Td> </Tr> <Tr> <Td> 1991 </Td> <Th> Stefan Edberg (2 / 2) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Jim Courier </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Pete Sampras (1 / 6) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Pete Sampras (2 / 6) </Th> <Td> </Td> </Tr> <Tr> <Td> 1995 </Td> <Th> Pete Sampras (3 / 6) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Pete Sampras (4 / 6) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Pete Sampras (5 / 6) </Th> <Td> </Td> </Tr> <Tr> <Td> 1998 </Td> <Th> Pete Sampras (6 / 6) </Th> <Td> </Td> </Tr> <Tr> <Td> 1999 </Td> <Th> Andre Agassi </Th> <Td> </Td> </Tr> <Tr> <Td> 2000 </Td> <Th> Gustavo Kuerten </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Lleyton Hewitt (1 / 2) </Th> <Td> </Td> </Tr> <Tr> <Td> 2002 </Td> <Th> Lleyton Hewitt (2 / 2) </Th> <Td> </Td> </Tr> <Tr> <Td> 2003 </Td> <Th> Andy Roddick </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Roger Federer (1 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 2005 </Td> <Th> Roger Federer (2 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 2006 </Td> <Th> Roger Federer (3 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 2007 </Td> <Th> Roger Federer (4 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> 2008 </Td> <Th> Rafael Nadal (1 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 2009 </Td> <Th> Roger Federer (5 / 5) </Th> <Td> </Td> </Tr> <Tr> <Td> </Td> <Th> Rafael Nadal (2 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 2011 </Td> <Th> Novak Djokovic (1 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 2012 </Td> <Th> Novak Djokovic (2 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 2013 </Td> <Th> Rafael Nadal (3 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 2014 </Td> <Th> Novak Djokovic (3 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 2015 </Td> <Th> Novak Djokovic (4 / 4) </Th> <Td> </Td> </Tr> <Tr> <Td> 2016 </Td> <Th> Andy Murray </Th> <Td> </Td> </Tr> <Tr> <Td> 2017 </Td> <Th> Rafael Nadal (4 / 4) </Th> <Td> </Td> </Tr> </Table> <P> </P> </Td> <Td> <Table> <Tr> <Th> Number of Years as Year - end No. 1 </Th> <Th> Player </Th> </Tr> <Tr> <Td> 6 </Td> <Td> Pete Sampras </Td> </Tr> <Tr> <Td> 5 </Td> <Td> Jimmy Connors </Td> </Tr> <Tr> <Td> Roger Federer </Td> </Tr> <Tr> <Td> </Td> <Td> John McEnroe </Td> </Tr> <Tr> <Td> Ivan Lendl </Td> </Tr> <Tr> <Td> Novak Djokovic </Td> </Tr> <Tr> <Td> Rafael Nadal </Td> </Tr> <Tr> <Td> </Td> <Td> Björn Borg </Td> </Tr> <Tr> <Td> Stefan Edberg </Td> </Tr> <Tr> <Td> Lleyton Hewitt </Td> </Tr> <Tr> <Td> </Td> <Td> Ilie Năstase </Td> </Tr> <Tr> <Td> Mats Wilander </Td> </Tr> <Tr> <Td> Jim Courier </Td> </Tr> <Tr> <Td> Andre Agassi </Td> </Tr> <Tr> <Td> Gustavo Kuerten </Td> </Tr> <Tr> <Td> Andy Roddick </Td> </Tr> <Tr> <Td> Andy Murray </Td> </Tr> </Table> </Td> </Tr>

Who is number 1 in the world at tennis