By Ross Dellenger Schools that already fired their coach have had a pretty good weekend on the field. Will any get the permanent job? What do Brent Key, Shaun Aguano, Mickey Joseph and Jim Leonhard all have in common? They are interim coaches who all won this week. At Georgia Tech, Key improved to 2–0 since taking over for Geoff Collins with an overtime win over Duke. Aguano led Arizona State to a victory over No. 21 Washington. On Friday night, Joseph’s Nebraska team won a second straight game, this time over Rutgers, and Leonhard, in his first game as interim at Wisconsin, got a 42–7 rout of…