Let's look at all the lesser lights who have either won, finished 2nd, or missed a major championship playoff by one shot since 2000. Shane Bacon used 2000 PGA Championship runner-up Bob May for an example, so we'll use that year as a cutoff point.
The PGA Championship is this week, and I think most would agree that this is the least exciting major of the season. It doesn't have the sanctity of the Masters, the grind of the U.S. Open or the history of the British, but it does have one thing that most don't; a history of drama, and a lot of that drama was from one-hit wonders. Names like Rich Beem (pictured), Bob May, Shaun Micheel, Chad Campbell and Y.E. Yang come to mind. So what is it about this major that brings out the randoms?
Masters- Charl Schwartzel, Zach Johnson, Trevor Immelman, Len Mattiace, Jason Day, Tim Clark
US Open- Stephen Leaney, Michael Campbell, Angel Cabrera, Lucas Glover, Graeme McDowell, Jason Day, Gregory Havret, Ricky Barnes
Someone might even add Rory McIlroy. Forget all the hype and count his pro win total. It's three and that's less than YE Yang and equal to Rich Beem's!(Beem has five wins as a pro but two were team events.)
The British Open- Louis Oosthuizen, Todd Hamilton, Thomas Levet, Chris Wood, Andres Romero, Ben Curtis, Gary Evans, Niclas Fasth
Some people might add Shigeki Maruyama and Thomas Bjorn to this list.
If you're going to use Yang as an example, you then have to bring in European and other golfers who have done their primary winning on tours other than the PGA.
Also note Ben Curtis has notched a pretty good record since his coming out of nowhere at the 2003 British Open. I'm only including golfers who were at the time unrecognized. Chad Campbell finished runner-up at the 2009 Masters to Angel Cabrera. By that time Campbell had multiple PGA Tour wins and Cabrera a major championship title.
PGA- Bob May, Rich Beem, Shaun Micheel, Chad Campbell, YE Yang
Some people might put Bubba Watson, Rory McIlroy, and Martin Kaymer on this list.
So look at the lists again. Including the iffy ones,
The PGA has 8
The British Open has 10
The U.S. Open has 9
The Masters has 6
Conclusion- The PGA brings out the 2nd least randoms of the 4 major championships. I suggest Shane Bacon brush up on his major championship history.