[3][4] In addition to the singles and doubles events, a Legends Invitational Singles competition was held, featuring Michael Chang, Stefan Edberg and Jim Courier, winner of the competition at the 2008 Countrywide Classic.

The LA Tennis Open kicked off with the "Millennium Challenge" featuring Pete Sampras returning to the University of California, Los Angeles (UCLA) to play Marat Safin in a rematch of their 2000 US Open final, won by the Russian 6–4, 6–3, 6–3.

[5] Fourteen-time Grand Slam champion Sampras, who held the World No.

1 ranking for a record 286 weeks, was recognized as the 2009 LA Tennis Open Tournament Honoree.

The following players received wildcards into the singles main draw The following players received special exemptions into the singles main draw The following players received entry from the qualifying draw: Sam Querrey defeated Carsten Ball, 6–4, 3–6, 6–1 Bob Bryan / Mike Bryan defeated Benjamin Becker / Frank Moser, 6–4, 7–6(7–2)