He probably just levelled up which gives an automatic super. Just looked at his profile and he is level 26 so this is possible.
Also you can't name and shame as you can get banned.
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Not as soon as u start the match there was no points to give
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He simply completed a bounty in his inventory... Which made him level up during the match. When leveling up... Your super is immediately refilled.
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You just turn in bounties at the beginning to level and you get a surprise super. People have been doing it for a long time (ever since rebuilding your character to boost your k/d or change appearance became a thing). It stinks but it isn't cheating, it's just a person being shady.
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Maybe he completed some bounties just after he spawned in to complete level 25?