The 22nd Masters played, this is the one in which the term "Amen Corner" was first used. And Arnold Palmer won it for the first time.
Winner: Arnold Palmer, 284
Where it was played: Augusta National Golf Club, Augusta, Georgia
Tournament dates: April 3-6, 1958
Leader after first round: Ken Venturi, 68
Leader after second round: Ken Venturi, 140
Leader after third round: Sam Snead and Arnold Palmer, 211
Notable Notes: Two firsts happened at the 1958 Masters: Arnold Palmer won his first, and "Amen Corner" was first used to describe holes 11-13 at Augusta National Golf Club.
"Amen Corner" was used by sportswriter Herbert Warren Wind after Palmer was first involved in a rules controversy, then eagled the 13th. The outcome of those events helped Palmer to the first of his four Masters titles.
The rules controversy involved an embedded ball on the 12th hole. Palmer thought he should get a free drop, the on-site official said no. Palmer double-bogied, but replayed the shots with a second ball (as if he had been given the free drop). With the second ball, he parred. Afterward, the committee said Palmer's par was the score that counted. Even decades later, Palmer's playing partner, Ken Venturi, was still disputing the chain of events (see here and here for fuller explanations).