Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Date | Tournament | Winning score | Margin of victory | Runner(s)-up |
| --- | --- | --- | --- | --- |
| Apr 1, 1990 | The Tradition at Desert Mountain | –10 (71-67-68=206) | 4 strokes | Gary Player |
| Jun 10, 1990 | Mazda Senior Tournament Players Championship | –27 (65-68-64-64=261) | 6 strokes | Lee Trevino |
| Apr 7, 1991 | The Tradition at Desert Mountain | –11 (71-73-66-67=277) | 1 stroke | Jim Colbert , Jim Dent , Phil Rodgers |
| Apr 21, 1991 | PGA Seniors' Championship | –17 (66-66-69-70=271) | 6 strokes | Bruce Crampton |
| Jul 29, 1991 | U.S. Senior Open | +2 (72-69-70-71=282) | Playoff | Chi-Chi Rodriguez |
| Jul 11, 1993 | U.S. Senior Open | –6 (68-73-67-70=278) | 1 stroke | Tom Weiskopf |
| Jan 9, 1994 | Mercedes Championships | –9 (73-69-69-68=279) | 1 stroke | Bob Murphy |
| Apr 2, 1995 | The Tradition | –12 (69-71-69-67=276) | Playoff | Isao Aoki |
| Feb 18, 1996 | GTE Suncoast Classic | –2 (76-68-67=211) | 1 stroke | J. C. Snead |
| Apr 7, 1996 | The Tradition | –16 (68-74-65-65=272) | 3 strokes | Hale Irwin |
Question:
What was the margin of victory for Isao Aoki when he was a runner-up?
Answer:
Playoff