Will Power posted a four-lap qualifying average of 228.844 mph to tentatively grab the Indianapolis 500 pole.
AJ Mast/AP

Australia's Will Power found extra speed during Saturday morning's practice, then posted a four-lap qualifying average of 228.844 mph to tentatively grab the Indianapolis 500 pole.

Defending series champion Ryan Hunter-Reay is second at 228.282, with rookie Carlos Munoz of Colombia third at 228.171.

The start of qualifying was delayed about 2 1/2 hours because of rain. All cars can attempt to requalify until 6 p.m. The nine fastest drivers will make another qualifying run in the pole shootout.

All five drivers from Andretti Autosport and all three from Team Penske finished among the top nine. Ed Carpenter is the only non-Penske or non-Andretti driver currently in the top nine.

The first 24 starting spots have been filled. The remaining nine will be filled Sunday.

SI Apps
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide - from Peter King, Tom Verducci, Lee Jenkins, Seth Davis, and more - delivered straight to you, along with up-to-the-minute news and live scores.