Dallas Cowboys defensive end Greg Hardy tweeted ''regret'' on Saturday night after photos of his bruised ex-girlfriend from his domestic violence case were released by Deadspin a day earlier.

Hardy said on Twitter that he ''had to say I express my regret 4 what happened in past'' and that he's ''dedicated to being the best person & teammate that I can be.'' He also said he was grateful to still be playing in the NFL.

Hardy missed 14 games last season while with Carolina due to the domestic case and served a four-game suspension from the NFL to begin this year.

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Hardy signed an incentive-laden $13 million contract as a free agent with Dallas in March.