IndyCar Driver Road/Street Power Rankings after 2018 Grand Prix of Portland
By Asher Fair
#5 through #1
#5. . No. 1. Team Penske, Chevrolet. JOSEF NEWGARDEN
| Last Rank | 5th (-) |
| Races | 10 |
| Top 10 finishes | 8 |
| Top 5 finishes | 3 |
| Podium finishes | 2 |
| Wins | 2 |
| Average finish | 7.40 |
| Average finish in last five races | 7.80 |
| Most recent finish | 10th |
| Points in most recent race | 21 |
| Standings position | 4th |
| Points | 295 |
No. 27. Andretti Autosport, Honda. ALEXANDER ROSSI. #4.
| Last Rank | 3rd (-1) |
| Races | 10 |
| Top 10 finishes | 7 |
| Top 5 finishes | 5 |
| Podium finishes | 4 |
| Wins | 2 |
| Average finish | 6.80 |
| Average finish in last five races | 9.00 |
| Most recent finish | 8th |
| Points in most recent race | 27 |
| Standings position | 2nd |
| Points | 316 |
#3. . No. 6. Schmidt Peterson Motorsports, Honda. ROBERT WICKENS
| Last Rank | 2nd (-1) |
| Races | 9 |
| Top 10 finishes | 7 |
| Top 5 finishes | 5 |
| Podium finishes | 3 |
| Wins | 0 |
| Average finish | 7.89 |
| Average finish in last five races | 4.80 |
| Most recent finish | N/A |
| Points in most recent race | 0 |
| Standings position | 6th |
| Points | 252 |
. No. 28. Andretti Autosport, Honda. RYAN HUNTER-REAY. #2
| Last Rank | 4th (+2) |
| Races | 10 |
| Top 10 finishes | 7 |
| Top 5 finishes | 6 |
| Podium finishes | 5 |
| Wins | 1 |
| Average finish | 7.50 |
| Average finish in last five races | 5.60 |
| Most recent finish | 2nd |
| Points in most recent race | 41 |
| Standings position | 3rd |
| Points | 307 |
#1. . No. 9. Chip Ganassi Racing, Honda. SCOTT DIXON
| Last Rank | 1st (-) |
| Races | 10 |
| Top 10 finishes | 9 |
| Top 5 finishes | 7 |
| Podium finishes | 4 |
| Wins | 2 |
| Average finish | 4.40 |
| Average finish in last five races | 3.60 |
| Most recent finish | 5th |
| Points in most recent race | 30 |
| Standings position | 1st |
| Points | 350 |
Biggest Movers
Up: Sebastien Bourdais, Takuma Sato (+5)
Down: Marco Andretti (-5)