Table:
text: 1972 USAC Championship Car season
Schedule and results
Schedule and results
Rnd Date_ Length_ Race_Name Track Location_ Pole_Position Winning_Driver
1 March 18 Jimmy Bryan 150 mi (km) Phoenix International Raceway Avondale , Arizona Bobby Unser Bobby Unser
2 April 23 Trentonian 200 mi (km) Trenton International Speedway Trenton , New Jersey Bobby Unser Gary Bettenhausen
3 May 27 International 500 Mile Sweepstakes mi (km) Indianapolis Motor Speedway Speedway , Indiana Bobby Unser Mark Donohue
4 June 4 Rex Mays Classic mi (km) Wisconsin State Fair Park Speedway West Allis , Wisconsin Bobby Unser Bobby Unser
5 July 16 Michigan 200 mi (km) Michigan International Speedway Brooklyn , Michigan Bobby Unser Joe Leonard

Question: What rounds did Phoenix International Raceway host in the 1972 USAC Championship Car season?

Question: What courses were held at Phoenix International Raceway in the 1972 USAC Championship Car season?