|Full name||Omar Alfredo Guerra Castilla|
|Date of birth||May 11, 1981|
|Place of birth||Barranquilla, Colombia|
|Height||1.70 m (5 ft 7 in)|
|2004||→ Deportivo Pereira (loan)||11||(1)|
|2005||→ Aucas (loan)||24||(17)|
|2006||→ Deportivo Cuenca (loan)||26||(8)|
|2007||→ Deportivo Quito (loan)||17||(6)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 13 December 2015.
Guerra began his professional playing career with Millonarios, scoring a goal on his debut, during the second half of 1999. Beginning in 2005, Guerra played for Aucas, Deportivo Cuenca and Deportivo Quito in Serie A de Ecuador, scoring 31 goals in three seasons.
In 2008, he returned to Millonarios for a brief spell, but has since returned to Ecuador to pay for Técnico Universitario from Ambato.