Chapman attended South Panola High and helped them to the Class 5A State Championship as a senior.
College career
Chapman played college football at Jacksonville State. He set a school record by rushing for 298 yards against Tennessee-Martin. He majored in psychology.
Professional career
2004
Chapman was signed by the Baltimore Ravens as an undrafted rookie free agent but was waived at the end of training camp. He was picked up by the New England Patriots on September 7 where he spent time on and off the practice squad.
2005
Chapman was allocated to NFL Europe and played ten times for the Cologne Centurions. During his time there he rushed for 718 yards on 126 carries and five touchdowns. He was waived by the Patriots and then re-signed to their practice squad. The Indianapolis Colts signed him to their active roster on September 21 and made his NFL debut versus the Cleveland Brownson September 25 [San Francisco 49ers] on October 2.