McGrath won a record of seventy-two 250cc Main Events and captured seven 250cc supercross championships between 1993 and 2000, a time now known as the "McGrath Era.". He also won the 1995 250 Outdoor Motocross Championship and had the 1996 title in sight before a late-season injury handed the title to Jeff Emig. He described the loss as follows: ""I get mad at myself a little bit because I should’ve won the ’96 title too, but I was thinking I was invincible and tried a jump at Millville that I never should have attempted and got injured."" McGrath also participated in two victories by the U.S. team at the Motocross des Nations –1993 in Austria and 1996 in Spain. His 1998, 1999, 2000 seasons with The Chaparral Motorsports race team was the 1st non-factory team, in the history of the sport, to win a Supercross Championship