During his 50-year career, Steinberg has represented over 300 professional athletes in football, baseball, basketball, boxing, and Olympic sports.

[2] Steinberg was born and raised in Los Angeles by his parents, a teacher and a librarian, who pushed public service along with ambition.

[10] Steinberg has successfully negotiated over $3 billion in contracts for players including Troy Aikman, Steve Young, and Patrick Mahomes.

He has endowed scholarships at his high school, donated time and resources to organizations such as Special Olympics, Juvenile Diabetes Foundation, and Junior Achievement.

[1] Steinberg has received screen credit as a technical consultant on several films, including Jerry Maguire, Any Given Sunday, and For the Love of the Game.

He has also worked as a consultant for the HBO original series Arli$$ and served as the title sponsor of the annual Newport Beach Film Festival.

He has been at the forefront of the Internet revolution, creating and building sports websites, strategically aligning his firm with ESPN's Sportzone.com and developing online marketing courseware for professionals and students alike.

[1] Steinberg wrote a best-selling book with Michael D'Orso, Winning with Integrity: Getting What You Want Without Selling Your Soul, published by Three Rivers Press in October 1999.

Steinberg gave key insights into the changes he's brought to the world through sports; one of his strategies was to encourage his clients to give back to the high school community that helped shape them.

[16][17] In 1992, Steinberg helped lead a successful campaign to prevent the San Francisco Giants baseball club from relocating to Florida.