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 |
| --- | --- | --- | --- | --- |
| 3 Mar 1996 | Catalan Open | −9 (65-70=135) | 1 stroke | Fernando Roca |
| 20 Feb 1999 | Qatar Masters | −20 (68-65-67-68=268) | 7 strokes | Søren Kjeldsen , Phillip Price |
| 18 Jul 1999 | The Open Championship | +6 (73-74-76-67=290) | Playoff | Justin Leonard , Jean van de Velde |
| 21 Oct 2001 | Dunhill Links Championship | −18 (71-68-63-68=270) | 1 stroke | Ernie Els |
| 11 Aug 2002 | Celtic Manor Resort Wales Open | −16 (67-65-70-70=272) | 5 strokes | John Bickerton |
| 27 Mar 2011 | Open de Andalucía de Golf | −12 (66-67-65-70=272) | 1 stroke | Johan Edfors |
| 5 Feb 2012 | Commercialbank Qatar Masters * | −15 (69-67-65=201) | 4 strokes | Jason Day , Peter Hanson |
| 26 Aug 2012 | Johnnie Walker Championship at Gleneagles | −16 (68-69-67-68=272) | 4 strokes | Brett Rumford |
Question:
What is the winning score for the runner-up Ernie Els?
Answer:
−18 (71-68-63-68=270)