Kimball tops Clarke in 2nd Lights practice
Andretti Autosport's Charlie Kimball remained on top in the 2nd Firestone Indy Lights Carneros 100 practice at Infineon Raceway in Sonoma, California. He beat ex-ChampCar driver Dan Clarke who has shown steady progress in this his first full year in Indy Lights
James Hinchcliffe, J.K. Vernay and Sebastian Saavedra rounded out the top-5.
Results
| Pos | Driver | Team | No. | Time | Speed | Diff | Gap |
| 1 | Charlie Kimball | AFS Racing/Andretti Autosport | 26 | 01:23.5212 | 99.266 | –.—- | –.—- |
| 2 | Dan Clarke | Walker Racing | 40 | 01:23.6646 | 99.096 | 0.1434 | 0.1434 |
| 3 | James Hinchcliffe | Team Moore Racing | 2 | 01:23.9865 | 98.716 | 0.4653 | 0.3219 |
| 4 | J.K. Vernay | Sam Schmidt Motorsports | 7 | 01:24.0215 | 98.675 | 0.5003 | 0.0350 |
| 5 | Sebastian Saavedra | Bryan Herta Autosport | 29 | 01:24.1890 | 98.478 | 0.6678 | 0.1675 |
| 6 | Martin Plowman | AFS Racing/Andretti Autosport | 27 | 01:24.2071 | 98.457 | 0.6859 | 0.0181 |
| 7 | Gustavo Yacaman | Cape Motorsports with Wayne Taylor Racing | 10 | 01:24.3936 | 98.240 | 0.8724 | 0.1865 |
| 8 | Pippa Mann | Sam Schmidt Motorsports | 11 | 01:24.4128 | 98.217 | 0.8916 | 0.0192 |
| 9 | Philip Major | Sam Schmidt Motorsports | 49 | 01:24.7564 | 97.819 | 1.2352 | 0.3436 |
| 10 | Adrian Campos Jr. | Team Moore Racing | 22 | 01:24.8380 | 97.725 | 1.3168 | 0.0816 |
| 11 | Alex Ellis | Sam Schmidt Motorsports | 77 | 01:24.8501 | 97.711 | 1.3289 | 0.0121 |
| 12 | Joel Miller | Bryan Herta Autosport | 28 | 01:24.8641 | 97.695 | 1.3429 | 0.0140 |
| 13 | David Martinez | Genoa | 36 | 01:24.9126 | 97.639 | 1.3914 | 0.0485 |
| 14 | Juan Pablo Garcia | Michael Crawford Motorsports | 8 | 01:25.2650 | 97.236 | 1.7438 | 0.3524 |
| 15 | Giancarlo Vilarinho | Andersen Racing | 4 | 01:26.1634 | 96.222 | 2.6422 | 0.8984 |
| 16 | Rodrigo Barbosa | PDM Racing | 18 | 01:26.2232 | 96.155 | 2.7020 | 0.0598 |