"Kaley Cuoco and Ryan Sweeting have mutually decided to end their marriage," Cuoco's rep tells PEOPLE exclusively. "They ask for privacy at this time. No further statement will be issued regarding this matter."
The Big Bang Theory star, 29, and the tennis player, 28, were wed on Dec. 31, 2013 at a fire-and-ice-themed wedding.
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The couple fought back against rumors of marriage troubles earlier this year with Cuoco taking to Instagram in April to deny the rumors.
"I have never been more proud of anyone on this planet – this guy is fighting back from a whirlwind of injuries and not to mention constant 'conversation' regarding our marriage and basically any daily decision we decide to make," Cuoco wrote in April.
The pair were engaged in September 2013 after a whirlwind romance.