Just one race remains on the 2018 IndyCar schedule. How do the sport’s 10 full-time teams stack up against one another heading into that race?
The penultimate race of the 17-race 2018 IndyCar season is in the books, leaving only the 17th and final race, the IndyCar Grand Prix of Sonoma, at Sonoma Raceway on the scheduled before the offseason between the 2018 and 2019 seasons.
Rahal Letterman Lanigan Racing are set to enter the season finale having just earned their first victory of the season in the season’s 16th race, the Grand Prix of Portland, at Portland International Raceway.
Takuma Sato delivered Rahal Letterman Lanigan Racing their first victory of the season and their first victory as a two-car full-time team since Jimmy Vasser won the race at Auto Club Speedway (then California Speedway) in Fontana, California back in 2002.
Sato delivered the team this victory by winning the 105-lap race around the 12-turn, 1.967-mile (3.166-kilometer) Portland International Raceway road course after starting all the way back on the outside of the 10th row in 20th place.
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Rahal Letterman Lanigan Racing became the sixth team to win a race this year, as five other teams had already won at least one of the season’s first 15 races coming into the Grand Prix of Portland.
Team Penske, Andretti Autosport, Chip Ganassi Racing, Schmidt Peterson Motorsports and Dale Coyne Racing have also all won at least one race this season. The first three teams have combined to earn 13 victories in 2018, with Team Penske earning six of them, Andretti Autosport earning four of them and Chip Ganassi Racing earning three of them, while the other two teams have earned one victory each.
How did Rahal Letterman Lanigan Racing’s first victory of the season affect the IndyCar Team Power Rankings? Here are the formulated IndyCar Team Power Rankings and the non-formulated IndyCar Team Power Rankings following the action from Portland International Raceway.
To see how the formulated IndyCar Team Power Rankings are calculated, click here.
Formulated IndyCar Team Power Rankings
| Rank | Team | Manufacturer | Last Rank | Trend |
| 1 | Chip Ganassi Racing | Honda | 1 | 0 |
| 2 | Andretti Autosport | Honda | 3 | +1 |
| 3 | Team Penske | Chevrolet | 2 | -1 |
| 4 | Schmidt Peterson Motorsports | Honda | 4 | 0 |
| 5 | Dale Coyne Racing | Honda | 6 | +1 |
| 6 | Rahal Letterman Lanigan Racing | Honda | 5 | -1 |
| 7 | Ed Carpenter Racing | Chevrolet | 7 | 0 |
| 8 | A.J. Foyt Enterprises | Chevrolet | 8 | 0 |
| 9 | Carlin Motorsport | Chevrolet | 9 | 0 |
| 10 | Harding Racing | Chevrolet | 10 | 0 |
Biggest Movers
Up: Andretti Autosport, Dale Coyne Racing (+1)
Down: Team Penske, Rahal Letterman Lanigan Racing (-1)
Non-formulated IndyCar Team Power Rankings
| Rank | Team | Manufacturer | Last Rank | Trend |
| 1 | Chip Ganassi Racing | Honda | 3 | +2 |
| 2 | Andretti Autosport | Honda | 2 | 0 |
| 3 | Team Penske | Chevrolet | 1 | -2 |
| 4 | Schmidt Peterson Motorsports | Honda | 4 | 0 |
| 5 | Rahal Letterman Lanigan Racing | Honda | 5 | 0 |
| 6 | Dale Coyne Racing | Honda | 6 | 0 |
| 7 | Ed Carpenter Racing | Chevrolet | 7 | 0 |
| 8 | A.J. Foyt Enterprises | Chevrolet | 8 | 0 |
| 9 | Carlin Motorsport | Chevrolet | 9 | 0 |
| 10 | Harding Racing | Chevrolet | 10 | 0 |
Biggest Movers
Up: Chip Ganassi Racing (+2)
Down: Team Penske (-2)
Formulated rankings predictions for after next race
The calculation used to calculate the formulated IndyCar Team Power Rankings predicts that after the next race, the IndyCar Grand Prix of Sonoma, at Sonoma Raceway, here is how the formulated set of rankings will look.
| Formulated Rankings Predictions |
| 1st – Chip Ganassi Racing (-) |
| 2nd – Andretti Autosport (-) |
| 3rd – Team Penske (-) |
| 4th – Dale Coyne Racing (+1) |
| 5th – Schmidt Peterson Motorsports (-1) |
| 6th – Ed Carpenter Racing (+1) |
| 7th – Rahal Letterman Lanigan Racing (-1) |
| 8th – A.J. Foyt Enterprises (-) |
| 9th – Carlin Motorsport (-) |
| 10th – Harding Racing (-) |
The IndyCar Grand Prix of Sonoma is the final race of the 2018 IndyCar season. It is scheduled to take place on Sunday, September 16, and it is set to be broadcast live from Sonoma Raceway in Sonoma, California on NBC Sports Network starting at 6:30 p.m. ET.