Serena Williams Joined Andy Roddick For ANOTHER Surprise Cameo on Lip Sync Battle

Serena Williams may not be an official challenger on season five of Lip Sync Battle, but that doesn't mean she didn't come to win. After making a surprise appearance in Brooklyn Decker's performance of Beyoncé's "Sorry" on Thursday night's episode, the tennis champ left the crowd awestruck again when she took the stage a second time with Brooklyn's husband and competitor, Andy Roddick. Andy and Serena's performance of Bruno Mars's "Finesse" ended up being a Lip Sync Battle first, as no two competitors have ever booked the same surprise guest before. "We've never had somebody do this before. This was like a secret attack," host LL Cool JJ said. "Double agent vibes." Check out the full clip above.