#2 Most consecutive Grand Slam-winning seasons
Roger Federer held the record for most consecutive Grand Slam-winning seasons (8) when the Swiss maestro won his 16th title at the 2010 Australian Open. During this period, Federer won 3 Grand titles in a season on 2 occasions (2006-07), 2 titles in a season twice (2005, 2009), and a title apiece in 3 other seasons (2003, 2008, 2010).
Rafael Nadal went past Federer's record by registering a 10th consecutive Grand Slam-title winning season when he lifted his record-extending 9th title at the 2014 French Open. During this period, Nadal lifted 1 Slam title in a season on 7 occasions (2005-07, 2009, 2011-12, 2014), 2 Slams in a season twice (2008, 2013), and 3 Slams in a season once (2010).
#3 Most weeks in the Top 2
Federer (310 weeks) and Nadal (332 weeks) hold the record for most weeks at No. 1 and No. 2 respectively.
The duo have also spent more weeks in the top 2 than any other player. Nadal, who became the oldest year-end No. 1 in 2019, has been a top 2 player for 537 weeks as on the week starting 30 December 2019.
The next best tally of top 2 weeks belongs to Federer (528).
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