The first trailer for Magnolia Pictures' documentary Venus and Serena offers a look at the remarkable plight of sisters Venus Williams and Serena Williams, who changed the game of tennis forever. We get glimpses at their childhood, growing up in the rough neighborhood of Compton, California, and their early days training with their father, who always envisioned they would be the top tennis players in the world. Fans also get unprecedented, behind-the-scenes access to their lives off the court. Check out the first footage from Maiken Baird and Michelle Major's documentary, debuting April 4 on iTunes and VOD before hitting theaters May 10.