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 |
| --- | --- | --- | --- | --- |
| Aug 7, 1994 | NIKE Dakota Dunes Open | –12 (74-68-69-65=276) | 2 strokes | Rex Caldwell , Gary Webb |
| Sep 7, 1997 | NIKE Colorado Classic | –17 (71-66-64-66=267) | 1 stroke | J. L. Lewis |
| Jul 22, 2001 | BUY.COM Siouxland Open | –15 (66-67-70-70=273) | 1 stroke | Matt Kuchar , Eric Meeks |
| Oct 21, 2001 | BUY.COM Shreveport Open | –20 (66-68-67-67=268) | 1 stroke | Brian Kamm |
| Oct 28, 2001 | BUY.COM Tour Championship | –4 (71-72-72-69=284) | 3 strokes | Tom Carter , Brenden Pappas |
Question:
On what date was the Nike Colorado Classic held?
Answer:
Sep 7, 1997