Defending champion in the singles was Sam Querrey , who had to cancel his participation due to injury. In the final, Ernests Gulbis prevailed against Mardy Fish , who played his second final within two weeks. For Gulbis it was the first season and second career title. In doubles, Bob and Mike Bryan were the defending champions, but they didn't compete this year either. In this year's double-final, Mark Knowles and Xavier Malisse defeated the Indian-Filipino pairing Somdev Devvarman / Treat Conrad Huey . This victory was their first joint title and their first success in Los Angeles. For Knowles it was the first season and 54th career title, while Malisse won a tournament for the second time in the season, it is the sixth double title for the Belgian.
The field of participants in the single competition consisted of 28 players, that of the double competition consisted of 16 pairs. The four top seeded players in the singles each got a bye into the second round. The total prize pool was $ 619,500 and total financial liabilities were $ 700,000.
The qualification took place from July 23 to 25, 2011. Four qualifying places were played, which entitle them to participate in the main draw of the tournament.
The following prize money and world ranking points were paid out or credited for reaching the respective round. Players who moved into the main draw via qualification received the specified qualification points in addition to those for reaching the respective round. Otherwise the amounts are not to be understood as cumulative. Prize money for the double competition applies per team.