The 2023 Nascar Cup Series United Rentals Work United 500 took place at Phoenix Raceway on Sunday. There was zero cautions in the first stage, and William Byron got the first green flag. The first caution came on lap 139, Aric Almirola lost a wheel. Kyle Larson won stage 2 by 1.2 seconds from William Byron. With 10 laps to go, Harrison Burton spun out to bring out the third caution. Kevin Harvick was in first place before the caution, his five second lead over Kyle Larson was erased at the restart. A fourth caution came out with only three laps to go. William Byron captured the checkered flag in overtime for his second straight Cup Series win.
