| Phoenix Open|
Phoenix, United States
| Amateur tour (1953-67), Grand Prix circuit (1968-70)|Phoenix Open (tennis) Wikipedia
The Phoenix Open previously known as the Phoenix Thunderbird Championships or Thunderbird Classic is a defunct Grand Prix affiliated tennis tournament that originally started as an amateur event from 1953 to 1967, the tournament went open in 1968 and ended in 1970. It was held in Phoenix, Arizona in the United States and played on indoor hard courts from 1953 to 1965 and outdoor hard courts from 1966 to 1970.