In
1984, Hayes and Parsons joined the Cup Series and ran twenty-two races, posting three top-eight finishes and ended the season placing 24th in the standings, second behind
Rusty Wallace for
NASCAR Rookie of the Year. The same year, his Busch ride was bought by
Jack Ingram and Parsons ran five races for him, and had two top-five finishes. In
1985, he ran the full season, splitting time between
Jackson Bros. Motorsports and
Roger Hamby's car. Despite four top-tens, he failed to finish in thirteen races, and wound up 21st in points. In
1986, Parsons ran seventeen races, and had a best finish of fifth at Talladega. He had four more top-tens, but finished twenty-seventh in the final standings. The following season, he got his first full-time Cup ride, with the Jackson brothers, when he signed on to drive their No. 55
Oldsmobile, garnering seven top-tens and a fourteenth-place finish in the final points standings. In
1988, Parsons led 52 laps at the
Winston 500 and achieved his only Cup win. He also had a career-best points finish of ninth that season. The next season, however, he only had two top-five finishes and lost his ride at the end of the season. Parsons began
1990 driving the No. 4 car for
Morgan–McClure Motorsports, but was released only three races into the season. He ran at Bristol for Jackson in a one-race deal, finishing the race in 25th, and also drove for
Phil Barkdoll and
Lake Speed. He made his most starts with the fledgling
Diamond Ridge Motorsports, his best finish with them was a 21st at Darlington. He did not run the Cup series in 1991, but rather a handful of Busch races in his own equipment leased from Diamond Ridge. He had two top-tens, including a fourth-place finish at Darlington. After beginning 1992 with a tenth-place at the
Daytona 500 with
Melling Racing, he returned to Busch to run seven races, and had five top-tens. In
1993, Parsons returned to the Cup Series, running the No. 41 Chevy for
Larry Hedrick Motorsports. Despite an eighth-place finish at
Rockingham Speedway, Parsons was released near the end of the season. Phil ended the 1993 season with a ninth place finish at
Atlanta Motor Speedway while driving for
Butch Mock Motorsports. == Return to Busch Series ==