I can only assume that this is talking about a cricket match - please try and provide context so we can better answer your question. A "dugout", in cricket or baseball is the area where players sit to watch the match when they are not playing (sitting on the side). In this sentence, I can assume Raina has scored a goal and the dug-out erupted, that is, the players in the dug-out began to cheer, and Raina and Vijay began pumping their fists for the good shot.
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