Born in
Valparaíso, Chile, as a youth player Ulloa was with both Club Caupolicán and Deportivo Playa Ancha in his hometown. At professional level, he spent eleven seasons in the Chilean football playing for two teams at the
top division:
Santiago Wanderers (1967–71) and
Rangers de Talca (1972–77). Ulloa made his professional debut with Santiago Wanderers in the match against
Unión San Felipe on 9 April 1967 He was an important member of the squad that won the
1968 league title, the second one for the club, alongside teammates such as
Juan Álvarez,
Vicente Cantatore,
Nibaldo Alegre, among others, a team known as
The Panzers. In the late 1970s, he moved to Guatemala and played for
Comunicaciones and
Suchitepéquez. His last club was
Houston Hurricane in the United States. ==Personal life==