
Caroline Wozniacki said after losing to Serena Williams in the finals of the US Open Sunday that drinks that night were on Williams. Apparently she wasn’t joking.
As we saw on social media, Woz and Serena went partying together Sunday despite Serena hammering Woz 6-3, 6-3 in the finals.
The two shared pictures on Instagram from their night out together:

Even Joe Jonas of Jonas Brothers fame got in on the fun (he attended the match earlier in the day):
Woz and Serena have been friends for years and Williams was there to help her pal after she was dumped by golfer Rory McIlroy in May. Their friendship obviously extends well beyond the courts.
Even though some people will see this as harmless, I do question how much of a killer instinct Woz has in her matches against Serena knowing that she likes her so much. Then again, I could probably question how much of a killer instinct Woz has in most of her matches anyway …