Lopez is a 1997 graduate of Kempner High School in Sugar Land, Texas. Steven's siblings, Mark, Diana, and Jean Lopez were all USA National Team Members in the sport of Taekwondo. His dream is to have his two younger siblings, Mark and Diana on the same Olympic team one day.

2006 Sr. National Team Trials (Welter): 1st

2005 U.S. Olympic Committee Male Athlete of the Month (April)
2005 World Taekwondo Championships (Welter): GOLD
2005 Sullivan Award Finalist

2004 Athens Olympic Games: GOLD
2004 US Olympic Team Trials: GOLD
2004 Sullivan Award Finalist

2003 World Taekwondo Championships: GOLD
2003 World Taekwondo Qualification Tournament: BRONZE
2003 Pan American Games: GOLD
2003 Sullivan Award Finalist

2002 World Cup Taekwondo Championships: BRONZE
2002 Pan American Games: GOLD

2001 World Taekwondo Championships: GOLD

2000 Sydney Olympic Games: GOLD

1999 Pan American Games: GOLD
1999 Pan American Regional Olympic Qualifier: SILVER

1998 World Cup Taekwondo Championships: BRONZE
1998 Pan American Taekwondo Championships: GOLD

1997 World Cup Taekwondo Championships: GOLD

1996 Pan American Taekwondo Championships: GOLD
1996 World Junior Taekwondo Championships: GOLD

1994 Pan American Taekwondo Championships: SILVER
1994 World Cup Taekwondo Championships: BRONZE