Defending champion in the singles was Ernests Gulbis , who took part in the parallel tournament in Kitzbühel this year. What was remarkable was the fact that with Benoît Paire only one player from the current top 50 of the world rankings took part in the tournament. In the final, Sam Querrey , who had already won the tournament in 2009 and 2010, and the Lithuanian Ričardas Berankis faced each other. However, Berankis had no chance in his first ATP final, Querrey won clearly 6: 0, 6: 2. It was his third title in Los Angeles and the seventh in his career. In doubles, the pairing of Mark Knowles and Xavier Malisse were the defending champions, but they did not compete together this year. While Knowles didn't even take part in the tournament, Malisse plays alongside his compatriot Ruben Bemelmans . Malisse and Bemelmans won the tournament too, in the final they beat the Britons Jamie Delgado and Ken Skupski in three sets. It was the Belgians' first joint title, as well as Malisse's seventh and Bemelman's first career success.
The field of participants in the single competition consisted of 28 players, that of the doubles competition consisted of 16 pairs. The four top seeded players each received a bye into the second round.
The qualification took place from July 21 to 23, 2012. Four qualifying places were played, which entitle them to participate in the main draw of the tournament.