Table:
text: List of career achievements by Jack Nicklaus
Wins (18)
Wins (18)
Year_ Championship _54_holes Winning_score Margin Runners_up
1. 1962 U.S. Open 2 shot deficit −1 (72-70-72-69=283) Playoff 1 Arnold Palmer
2. 1963 Masters Tournament 1 shot lead −2 (74-66-74-72=286) 1 stroke Tony Lema
3. 1963 PGA Championship 3 shot deficit −5 (69-73-69-68=279) 2 strokes Dave Ragan
4. 1965 Masters Tournament (2) 5 shot lead −17 (67-71-64-69=271) 9 strokes Arnold Palmer, Gary Player
5. 1966 Masters Tournament (3) Tied for lead E (68-76-72-72=288) Playoff 2 Gay Brewer , Tommy Jacobs
6. 1966 The Open Championship 2 shot deficit −2 (70-67-75-70=282) 1 stroke Doug Sanders , Dave Thomas

Question: What was the Masters tournament's lead among Jack Nicklaus's Wins 18 career achievements list?