The Arizona Cardinals' Kyler Murray sent out a tweet on Sunday evening.
That tweet, a GIF of Avengers villain Thanos, sent Twitter into a tailspin.
What does it mean?
Speculation of the tweet's meaning included Lincoln Riley leaving Oklahoma for USC, Kliff Kingsbury's future as Cardinals head coach and Murray's potential return to the Cardinals lineup from injury, among other interpretations.
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Here is some of the speculation surrounding Kyler Murray's tweet:
What do you think it means?
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This article originally appeared on Arizona Republic: Arizona Cardinals: Kyler Murray tweet prompts speculation, discussion