Serena and Venus Williams will play doubles together at the US Open

Serena and Venus Williams are teaming up again at the U.S. Open. The sisters will play doubles at the tournament after receiving a wild card Wednesday into the event they won twice. Serena Williams returned to tennis this summer after a four-year absence, and the sisters were set to play at Wimbledon before Serena had to withdraw after injuring her knee in her singles loss. They played in the…