She attended Hephzibah High School and played for the Lady Rebels under coach Wendell Lofton.

[7] During her 1995-1996 freshman year at Clemson, in which the university won the ACC Championship, Umoh led the team in assists and steals.

[8] Coleman represented the United States during the 1999 Pan American Games, with the team winning a bronze medal.

In 1999 Umoh was in the preseason camps of the Minnesota Lynx and Washington Mystics but did not make either team.

In 2003, Coleman became the first Clemson player to be named to an active WNBA roster after being signed by the Houston Comets early in the season to replace the injured Cynthia Cooper (she had previously been in the Comets training camp that year but was waived before the regular season started).

[10][11] At the 2004 Summer Olympics in Athens, Coleman played for the Nigeria women's national basketball team.

[7] Coleman also played for the Nigerian national team at the 2006 FIBA World Championship for Women.