derrotaba
-I was defeating
The word derrotaba is the imperfect form of derrotar in the first person singular. There are other translations for this conjugation.
See the full derrotar conjugation

derrotar

Usted solo me decía: "Vaya a derrotarlos", y yo los derrotaba.
You only said "Go to defeat them", and I did it.
Mientras tanto, Australia derrotaba a la República Checa por 6 a 0.
Meanwhile, Australia was defeating the Czech Republic, 6-0.
Si te derrotaba, no era tu culpa.
No. When I played you, you never beat yourself.
Cuando Dominicana derrotaba con comodidad a Paraguay por 83-54, por el Grupo B del Torneo FIBA Américas Caracas 2013, un corte de luz obligó a suspender el juego a falta de 4:23.
When Dominican comfortably defeated Paraguay by 83-54, in Group B of the FIBA Americas Championship, a power outage forced to suspend play, with 4:23 remaining.
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