Why don't bring up some of Federer's French Open draws en route to Nadal? No I won't go there.
Well, here they all are. The French Open records of Federer and Sampras.
Roger Federer's French Open record
1999 French Open
R128: Patrick Rafter def. Roger Federer (5-7, 6-3, 6-0, 6-2)
2000 French Open
R128: Roger Federer def. Wayne Arthurs (7-6, 6-3, 1-6, 6-3)
R64: Roger Federer def. Jan-Michael Gambill (7-6, 6-3, 6-3)
R32: Roger Federer def. Michel Kratochvil (7-6, 6-4, 2-6, 6-7, 8-6)
R16: Alex Corretja def. Roger Federer (7-5, 7-6, 6-2)
2001 French Open
R128: Roger Federer def. Stefano Galvani (6-3, 6-3, 6-3)
R64: Roger Federer def. Sargis Sargsian (4-6, 3-6, 6-2, 6-4, 9-7)
R32: Roger Federer def. David Sanchez (6-4, 6-3, 1-6, 6-3)
R16: Roger Federer def. Wayne Arthurs (3-6, 6-3, 6-4, 6-2)
QF: Alex Corretja def. Roger Federer (7-5, 6-4, 7-5)
2002 French Open
R128: Hicham Arazi def. Roger Federer (6-3, 6-2, 6-4)
2003 French Open
R128: Luis Horna def. Roger Federer (7-6, 6-2, 7-6)
2004 French Open
R128: Roger Federer def. Kristof Vliegen (6-1, 6-2, 6-1)
R64: Roger Federer def. Nicolas Kiefer (6-3, 6-4, 7-6)
R32: Gustavo Kuerten def. Roger Federer (6-4, 6-4, 6-4)
2005 French Open
R128: Roger Federer def. Dudi Sela (6-1, 6-4, 6-0)
R64: Roger Federer def. Nicolas Almagro (6-3, 7-6, 6-2)
R32: Roger Federer def. Fernando Gonzalez (7-6, 7-5, 6-2)
R16: Roger Federer def. Carlos Moya (6-1, 6-4, 6-3)
QF: Roger Federer def. Victor Hanescu (6-2, 7-6, 6-3)
SF: Rafael Nadal def. Roger Federer (6-3, 4-6, 6-4, 6-3)
2006 French Open
R128: Roger Federer def. Diego Hartfield (7-5, 7-6, 6-2)
R64: Roger Federer def. Alejandro Falla (6-1, 6-4, 6-3)
R32: Roger Federer def. Nicolas Massu (6-1, 6-2, 6-7, 7-5)
R16: Roger Federer def. Tomas Berdych (6-3, 6-2, 6-3)
QF: Roger Federer def. Mario Ancic (6-4, 6-3, 6-4)
SF: Roger Federer def. David Nalbandian (3-6, 6-4, 5-2 ret.)
F: Rafael Nadal def. Roger Federer (1-6, 6-1, 6-4, 7-6)
2007 French Open
R128: Roger Federer def. Michael Russell (6-4, 6-2, 6-4)
R64: Roger Federer def. Thierry Ascione (6-1, 6-2, 7-6)
R32: Roger Federer def. Potito Starace (6-2, 6-3, 6-0)
R16: Roger Federer def. Mikhail Youzhny (7-6, 6-4, 6-4)
QF: Roger Federer def. Tommy Robredo (7-5, 1-6, 6-1, 6-2)
SF: Roger Federer def. Nikolay Davydenko (7-5, 7-6, 7-6)
F: Rafael Nadal def. Roger Federer (6-3, 4-6, 6-3, 6-4)
2008 French Open
R128: Roger Federer def. Sam Querrey (6-4, 6-4, 6-3)
R64: Roger Federer def. Albert Montanes (6-7, 6-1, 6-0, 6-4)
R32: Roger Federer def. Mario Ancic (6-3, 6-4, 6-2)
R16: Roger Federer def. Julien Benneteau (6-4, 7-5, 7-5)
QF: Roger Federer def. Fernando Gonzalez (2-6, 6-2, 6-3, 6-4)
SF: Roger Federer def. Gael Monfils (6-2, 5-7, 6-3, 7-5)
F: Rafael Nadal def. Roger Federer (6-1, 6-3, 6-0)
2009 French Open
R128: Roger Federer def. Alberto Martin (6-4, 6-3, 6-2)
R64: Roger Federer def. Jose Acasuso (7-6, 5-7, 7-6, 6-2)
R32: Roger Federer def. Paul-Henri Mathieu (4-6, 6-1, 6-4, 6-4)
R16: Roger Federer def. Tommy Haas (6-7, 5-7, 6-4, 6-0, 6-2)
QF: Roger Federer def. Gael Monfils (7-6, 6-2, 6-4)
SF: Roger Federer def. Juan Martin del Potro (3-6, 7-6, 2-6, 6-1, 6-4)
F: Roger Federer def. Robin Soderling (6-1, 7-6, 6-4)
2010 French Open
R128: Roger Federer def. Peter Luczak (6-4, 6-1, 6-2)
R64: Roger Federer def. Alejandro Falla (7-6, 6-2, 6-4)
R32: Roger Federer def. Julian Reister (6-4, 6-0, 6-4)
R16: Roger Federer def. Stanislas Wawrinka (6-3, 7-6, 6-2)
QF: Robin Soderling def. Roger Federer (3-6, 6-3, 7-5, 6-4)
2011 French Open
R128: Roger Federer def. Feliciano Lopez (6-3, 6-4, 7-6)
R64: Roger Federer def. Maxime Teixeira (6-3, 6-0, 6-2)
R32: Roger Federer def. Janko Tipsarevic (6-1, 6-4, 6-3)
R16: Roger Federer def. Stanislas Wawrinka (6-3, 6-2, 7-5)
QF: Roger Federer def. Gael Monfils (6-4, 6-3, 7-6)
SF: Roger Federer def. Novak Djokovic (7-6, 6-3, 3-6, 7-6)
F: Rafael Nadal def. Roger Federer (7-5, 7-6, 5-7, 6-1)
Pete Sampras' French Open record
1989 French Open
R128: Pete Sampras def. Jorge Lozano (6-3, 6-2, 6-4)
R64: Michael Chang def. Pete Sampras (6-1, 6-1, 6-1)
1991 French Open
R128: Pete Sampras def. Thomas Muster (4-6, 4-6, 6-4, 6-1, 6-4)
R64: Thierry Champion def. Pete Sampras (6-3, 6-1, 6-1)
1992 French Open
R128: Pete Sampras def. Marc Rosset (7-6, 4-6, 6-4, 3-6, 6-3)
R64: Pete Sampras def. Laurent Prades (7-6, 6-4, 7-6)
R32: Pete Sampras def. Rodolphe Gilbert (6-3, 6-2, 6-3)
R16: Pete Sampras def. Carl-Uwe Steeb (6-4, 6-3, 6-2)
QF: Andre Agassi def. Pete Sampras (7-6, 6-2, 6-1)
1993 French Open
R128: Pete Sampras def. Andrei Cherkasov (6-1, 6-2, 3-6, 6-1)
R64: Pete Sampras def. Marcos Ondruska (7-5, 6-0, 6-3)
R32: Pete Sampras def. Jonas Svensson (6-4, 6-4, 6-2)
R16: Pete Sampras def. MaliVai Washington (6-3, 7-6, 6-1)
QF: Sergi Bruguera def. Pete Sampras (6-3, 4-6, 6-1, 6-4)
1994 French Open
R128: Pete Sampras def. Albert Costa (6-3, 6-4, 6-4)
R64: Pete Sampras def. Marcelo Rios (7-6, 7-6, 6-4)
R32: Pete Sampras def. Paul Haarhuis (6-1, 6-4, 6-1)
R16: Pete Sampras def. Mikael Tillstrom (6-4, 6-4, 1-6, 6-4)
QF: Jim Courier def. Pete Sampras (6-4, 5-7, 6-4, 6-4)
1995 French Open
R128: Gilbert Schaller def. Pete Sampras (7-6, 4-6, 6-7, 6-2, 6-4)
1996 French Open
R128: Pete Sampras def. Magnus Gustafsson (6-1, 7-5, 7-6)
R64: Pete Sampras def. Sergi Bruguera (6-3, 6-4, 6-7, 2-6, 6-3)
R32: Pete Sampras def. Todd Martin (3-6, 6-4, 7-5, 4-6, 6-2)
R16: Pete Sampras def. Scott Draper (6-4, 7-5, 6-2)
QF: Pete Sampras def. Jim Courier (6-7, 4-6, 6-4, 6-4, 6-4)
SF: Yevgeny Kafelnikov def. Pete Sampras (7-6, 6-0, 6-2)
1997 French Open
R128: Pete Sampras def. Fabrice Santoro (6-3, 7-5, 6-1)
R64: Pete Sampras def. Francisco Clavet (6-1, 6-2, 6-2)
R32: Magnus Norman def. Pete Sampras (6-2, 6-4, 2-6, 6-4)
1998 French Open
R128: Pete Sampras def. Todd Martin (6-4, 6-3, 6-3)
R64: Ramon Delgado def. Pete Sampras (7-6, 6-3, 6-4)
1999 French Open
R128: Pete Sampras def. Juan Antonio Marin (6-7, 6-4, 7-5, 6-7, 6-4)
R64: Andrei Medvedev def. Pete Sampras (7-5, 1-6, 6-4, 6-3)
2000 French Open
R128: Mark Philippoussis def. Pete Sampras (4-6, 7-5, 7-6, 4-6, 8-6)
2001 French Open
R128: Pete Sampras def. Cedric Kauffmann (6-3, 4-6, 6-2, 3-6, 8-6)
R64: Galo Blanco def. Pete Sampras (7-6, 6-3, 6-2)
2002 French Open
R128: Andrea Gaudenzi def. Pete Sampras (3-6, 6-4, 6-2, 7-6)