 During his career with the Marlins, Willis went 68-54 with a 3.78 earned run average.He won at least 10 games each season during all five of his years with the Marlins from 2003 to 2007.On December 5, 2007, the Marlins traded Willis along with fellow All-Star Miguel Cabrera to the Detroit Tigers for Andrew Miller, Cameron Maybin, Mike Rabelo, Eulogio de la Cruz, Dallas Trahern and Burke Badenhop.