Richardson did not start playing football until attending Daleville High School in Daleville, Alabama, where he posted 1,003 rushing yards as a senior. He accepted a scholarship from Auburn University, where he was a three-year starter. He finished his college career with 715 rushing yards, 395 receiving yards and 11 touchdowns.
Richardson declared for the 1994 NFL Draft, but was not selected by any team. He entered the NFL as an undrafted free agent signed to the Dallas Cowboys. Although he was first waived on April 29, he was later brought back to the team and given the chance to finish training camp. He spent his rookie season on the practice squad as part of a team that included Pro Bowlers Emmitt Smith and Daryl Johnston. At the end of the season, he was declared a free agent.
Kansas City Chiefs
Richardson signed as a free agent with the Kansas City Chiefs on February 28, 1995. He started one game in that season, and was noted for blocking for Hall of FamerMarcus Allen on his way to his 100th career touchdown. He later became the starting fullback for the team, blocking for record setting running back Priest Holmes and the most productive seasons of Larry Johnson's career. He was selected to represent the AFC in the 2004 and 2005 Pro Bowls.
Minnesota Vikings
A free agent in the 2006 offseason, Richardson signed with the Minnesota Vikings. He was selected to represent the NFC in the 2008 Pro Bowl after paving the way for Rookie of the Year Adrian Peterson and Chester Taylor. At the end of the 2007 season, the Vikings did not re-sign Richardson, opting to pay for the cheaper Thomas Tapeh.
New York Jets
On March 6, 2008, Richardson signed a one-year contract with the New York Jets. He was re-signed by the team on February 27, 2009. Following the expiration of his previous contract, Richardson, once again, signed with the team on March 16, 2010. He was released on September 5, but a day later he was re-signed after the Jets reached a deal with cornerbackDarrelle Revis. He was the recipient of the "Whizzer" White NFL Man of the Year Award at the end of the 2010 season. During his time with the Jets, Richardson helped Thomas Jones to two 1,000+ yard seasons.
Personal life
His father, sergeant majorBen Richardson, was stationed in Germany when Tony was born, and he lived there for the first eight years of his life. When they returned to the U.S., the family lived in Daleville, Alabama, where Tony excelled as a three-sport letterman in football, basketball, and track & field. He attended Auburn University, where he started most of his four seasons as a fullback for the team, accumulating 162 carries for 715 yards and nine touchdowns. He received his Bachelor of Education degree in 2000, and later got his MBA from Webster University in 2004. Off the field, Richardson is very involved with local charities. He hosts the Kansas City chapter of the annual Special Olympics Punt, Pass & Kick competition, and has served as chairman of many charitable organizations and fundraisers. In 2002, he was nominated by his team for the NFL Man of the Year award. Richardson was elected to the NFLPAexecutive committee in 2008 for a two-year term.