Briscoe recorded his second career victory in the IndyCar Series. His first win came last month at Milwaukee.

It was also the first one-two finish for Penske Racing since 2005 at Phoenix.

Briscoe's route to victory at the 2.258-mile, 13-turn road course came with key pit strategies in the early stages.

Since heavy thunderstorms moved through the area earlier in the day, parts of the track were not completely dry at the start of the race. Teams opted for slick tires instead of rain tires after running the first few laps.

Castroneves started on the pole and led the first five laps before he made his tire change. Briscoe inherited the lead for one lap and then made his stop. That allowed Vitor Meira to take over the top spot from there.

The first full course yellow came on the eighth lap when Ryan Hunter-Reay and Enrique Bernoldi made contact. Meira continued to lead the way when the race resumed on Lap 13.

On lap 25, Briscoe pitted much earlier than expected. And the strategy worked to his advantage.

"We ran into a little bit of trouble early on," Briscoe said. "We went back in the pits and then stayed out a little too long. But what a comeback. That's all Roger (Penske). That's his strategy."

Mario Dominguez's spin in the gravel put the race under caution for the second time on Lap 26. All the leaders came in with Will Power barely winning the battle off of pit lane. Power beat Castroneves out of the pits by inches. Justin Wilson, Dan Wheldon, Jamie Camara, Briscoe, Ed Carpenter and Mario Moraes did not come in and ran first through sixth, respectively, at the restart on Lap 31. Power and Castroneves were seventh and eighth.

Wilson built a 4.5-second lead over Wheldon, but on Lap 38, the caution flag came out again when Milka Duno spun in turn 11. Earlier in the race, Marco Andretti also spun in the same turn, but Andretti was able to quickly rejoin the field.

After running 33 laps on the track, Wilson made his pit stop and handed the lead back over to Briscoe. Wilson restarted in the middle of the pack. While heading into a turn, Dominguez made contact, putting Wilson in a spin. Marco Andretti, A.J. Foyt and Wheldon were also involved in the incident.

Briscoe continued to pace the field until Lap 55, when he made a quick green-flag stop for fuel and tires. Moraes captured the lead before coming into the pits, handing the top spot over to Power.

Briscoe reclaimed the lead after the cycle of green-flag pit stops were completed. Briscoe held a 25-second advantage over Bruno Junqueira, who had yet to stop.

But Briscoe's lead was erased when Moraes spun in the gravel and the caution came with 23 laps to go. Moraes was running eighth at the time.

Briscoe quickly pulled ahead of Junqueira on the restart and then padded his lead over the Brazilian driver by six seconds with 15 laps remaining and then to 10 seconds with 10 to go. Junqueira had to pit in the closing laps, allowing Castroneves to take the second spot. Castroneves trimmed some of Briscoe's lead, but not enough to mount a serious charge at the end.

Scott Dixon, Power and Oriol Servia completed the top-five. Junqueira ended up finishing 13th.

Two weeks ago, Briscoe started on the pole and dominated much of the road- course race at Watkins Glen, NY. He led 37 of the first 42 laps. However, a bizarre incident occurred during a late-race caution when Briscoe and Dixon bumped into each other in turn 10. Dixon spun and Briscoe hit him. The two were running just behind leader Darren Manning at the time. Briscoe finished 12th at The Glen.

Meanwhile, Dixon left Mid-Ohio with a 58-point lead over second-place Castroneves and a 90-point advantage over Tony Kanaan, who moved into third place in the series championship standings.

The next event is scheduled for July 26th at Edmonton, Canada.