He is the great-grandson of Oklahoma Indian Chief Quana Parker and a member of the Comanche tribe.
Hammel was named a first team All-Conference pick and the Southland Conference Offensive Player of the Year.
He left Stephen F. Austin as the school's all-time leader in passing attempts, completions, yards, touchdowns, and total yardage.
[5] Hammel started the first game in Knights franchise history against the Barcelona Dragons, but was replaced in the first half by Jeff Graham.
Hammel led the Texans to a playoff victory over the Albany Firebirds where he threw four touchdown passes.
General Manager and head coach Michael Trigg was Hammel's offensive coordinator the two years he spent in Dallas.
[10] In 2002, Hammel signed with the Grand Rapids Rampage midway through the season where he appeared in two games.
In week 12 against the Chicago Rush, he relieved starting quarterback Clint Dolezel and led the Rampage to 20 straight points in a near come from behind victory.
[18] At 42 years of age, Hammel returned to professional football after not playing the previous two seasons.
Following an injury to Sharks' starting quarterback Aaron Garcia, Hammell was signed to backup Bernard Morris.
[23] In the season finale against the Cleveland Gladiators, he threw seven touchdowns while completing 31-of-44 passes for 355 yards in a 76–69 victory.