2. San Antonio Spurs - Tim Duncan vs. Steve Nash: 52-31 record (62.7%)
Much as Michael Jordan was to Karl Malone, Tim Duncan was the main reason Steve Nash retired ringless. The two legends met a whopping eight times in the postseason, with Duncan's Spurs coming out on top in seven of those series.
Duncan got the better of Nash in 1998, 2005, 2007, and 2008 when he was a Sun and in 2001 and 2003 when he was a Maverick. Nash was also a member of the 2013 Lakers that fell to the Spurs in the first round of the 2013 Western Conference playoffs.
Steve's lone series win over Duncan came in 2010 when the Suns swept the Spurs out of the Western Conference Semifinals. That Spurs team limped into the playoffs as the seventh seed despite winning 50 games.
All in all, Duncan owned a 25-12 playoff record against the two-time NBA MVP and a 27-19 regular season edge. Sorry about that, Steve, but at least you have a decent shot at winning a ring as a coach in the near future with the Nets.
The same goes for Nash's long-time coach Mike D'Antoni, who has gone 0-5 against Coach Popovich in the playoffs but now works as an assistant coach for a title favorite Brooklyn team.
Nash was inducted into the Basketball Hall of Fame in 2018.