Mo Nunn Racing team manager Kathryn Nunn said there wouldn't be any pressure or expectations placed on P.J. Chesson when he joined the IRL Menards Infiniti Pro Series™ on July 3.

Just learn and bring back the No. 76 Mo Nunn Racing Dallara/Infiniti/Firestone in one piece was her charge. He's done both in four races, and his victory in the Paramount Health Insurance 100 on Aug. 1 at Michigan International Speedway exceeding all expectations.

The former World of Outlaws star beat Series points leader Thiago Medeiros to the finish line by 0.0941 of a second. They had battled for first the final 20 laps, with the lead see-sawing every few laps. Chesson led by 0.3102 of a second and was running 190.705 mph with three laps left. They ran side by side as they crossed the line with two laps remaining, before Chesson gained the advantage and held on.

"Man, that was awesome," said Chesson, who became the eighth driver in Menards Infiniti Pro Series history to win in his rookie season. "I came on the radio and said, 'Does this thing do donuts?' They said, 'I don't know. Go try some.' So we ripped some donuts. I was so excited."

So was Nunn, the wife of IRL IndyCar® Series team owner Morris Nunn. She sought to form a Menards Infiniti Pro Series team since last year, and it came together for the Aventis Racing for Kids 100 at Kansas Speedway.

"I'm just absolutely thrilled," she said. "(Chesson) drove a brilliant, beautiful race. He was so patient, and I'm so proud of him. I'm so proud of this young team."

Chesson, who finished second to Paul Dana last week at The Milwaukee Mile, said it was exciting to put pressure on Medeiros, who has won our races this season.

"Just to get win there on a big track and running side by side with guys in my fourth race is so exciting I can't talk," he said. "I didn't like (being in the low line), and neither did the car. That's him being a good racer. I had to set myself up to get where I wanted to be on the outside. Luckily, it fell my way, so it was all good."

Medeiros, who set the Menards Infiniti Pro Series record for laps led in a season (429) and career (433), started third but was leading the pack on Lap 2 when he passed Sam Schmidt Motorsports teammate Arie Luyendyk Jr. He led a race-high 37 laps.

"I made a good start and stayed at the front in the early laps," he said. "I was doing my best, but at the end of the race my car was changing a lot. We had a tire problem and had to slow down a little bit, and P.J. got around us.

"I had a good run and got some more points for the championship. We're still leading the championship, so we can fight for the next one in Kentucky."

Al Unser, who also joined the Series for the race at Kansas, finished third for the third time in his four races. Unser, who won his first pole on July 31 on the two-mile D-shaped oval, finished 4 seconds behind.

"When we went out there, it wasn't quite the car I expected, but we had a good car in qualifying," he said. "I'm learning more about the draft and trying to play with all these big boys. P.J. sure came out here and did a fine job. I wish I could have been up there with him."

There was one caution period when the No. 24 Team ISI entry driven by Billy Roe spun exiting Turn 4 on Lap 10 and spun across the entrance to pit road. He was not injured.

"It was loose the whole time," he said.