As to pressure, who puts pressure on Tiger ? Billy Mayfair and Rocco Mediate are the only two, in a decade, that come to mind.
1998 Br Open....Tiger shot 66, but lost by two when O'Meara shot 68
1999 U.S. Open..Payne Stewart shot 70, 3rd lowest round of day, to beat TW (who also shot 70) by 2
1999 PGA Sergio Garcia: 71, pushed Tiger to last hole
2000 PGA Bob May: three 66's in a row, forced Tiger to shoot 31 final nine just to tie
2001 Masters David Duval: 67...72 hole total 274...Tiger had to shoot 68 and 272 to win
2002 PGA Rich Beem: 67, beat Tiger even though Woods staged furious rally on final 9
2005 Masters Chris DiMarco: 68, forced playoff, beat all others by 7 strokes
2005 U.S. Open Michael Campbell: 69, played near-flawless final 9, only player to match par for 72 holes
2006 Masters Phil Mickelson: shot 69, played near-flawless golf final 18 to win
2006 Br. Open Chris DiMarco: 68, Tiger had to shoot 67 (low round of day) to win by 2 at -18
2007 Masters Zach Johnson: 69, low round of the day, to win, Tiger 2nd
2007 U.S. Open Angel Cabrera: 69, 2nd-best round of the day, to beat Tiger by 1