Dez Bryant suffered a concussion during practice Monday and won't play in this week's preseason game against the Seahawks, per the Cowboys' official website.
The injury isn't believed to be too serious, and the team likely made the early decision to sit him because, well, it's the preseason.
Bryant took to Twitter shortly after the news broke to say he's fine.
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The Cowboys receiver was off to a hot start in the preseason, with a touchdown reception in each of his first two games.