Give you a statement and table with its title in Markdown format, please determine whether the statement is supported or refuted by, or is unrelated to the table. It'a binary classification problem, you should choose the answer between supported and refuted. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| manager | mexico career | played | drawn | lost | win % |
| horacio casarin | 1977 | 5 | 4 | 0 | 20.0 |
| mario velarde | 1983 | 3 | 1 | 2 | 0.0 |
| jesús del muro | 1985 , 1998 - 1999 | 12 | 1 | 2 | 75.0 |
| alfonso portugal diaz | 1991 | 4 | 2 | 1 | 25.0 |
| juan de dios castillo | 1992 - 1993 | 7 | 2 | 1 | 60.0 |
| juan manuel alvarez | 1994 | 3 | 0 | 1 | 56.6 |
| josé luis real | 1996 - 1997 , 2001 | 12 | 3 | 3 | 50.0 |
| eduardo rergis | 2002 - 2003 | 6 | 1 | 3 | 33.3 |
| humberto grondona | 2005 | 3 | 0 | 2 | 33.3 |
| jesús ramírez | 2007 - 2009 | 8 | 1 | 1 | 75.0 |
| juan carlos chávez | 2009 - 2011 | 19 | 3 | 4 | 63.15 |
| sergio almaguer | 2011 - | 5 | 0 | 0 | 100.0 |
Title:
mexico national under - 20 football team
Statement:
there were 4 managers who were in charge for at least 10 games
Answer:
refuted