What are the biggest blown leads at the Masters?

Rory McIlroy is no stranger to blown leads at the Masters. His evaporated four-stroke lead in 2011 remains one of the four largest final-round collapses in Masters history.

Even still, a failure to win this year's tournament will make its own history among Masters meltdowns.

McIlroy jumped out to the largest 36-hole lead in Masters history Friday, pacing the field by six going into the third round. Which means a collapse would stand alone as the biggest blown 36-hole lead. And by the end of Saturday, that became a realistic possibility as Cameron Young pulled into a tie with McIlroy and six other players pulled to within at least four.

Biggest 36-hole leads in Masters history

Even five-stroke leads after 36 holes have been traditionally safe, with five of the previous six players to go up by five at the Masters having gone on to win the tournament. The lone exception was Harry Cooper in 1936, whose blown five-stroke lead currently stands as the biggest.

Not only would a McIlroy collapse beat that, it would tie for the largest blown 36-hole lead in any major, matching Abe Mitchell at the 1920 British Open.

Biggest final-round blown leads in Masters history

• 1996 Greg Norman (6 shots)
• 1979 Ed Sneed (5 shots)
• 1956 Ken Venturi (4 shots)
• 2011 Rory McIlroy (4 shots)

On the bright side, McIlroy won't have to worry about blowing a big lead in the final round again. Greg Norman's 1996 collapse after taking a six stroke lead into the final round is safe.

This article originally appeared on For The Win: What are the biggest blown leads in Masters history?