Walsh successfully drove through some early tire shake to retake the lead and stay there.

Don Walsh's incremental margins (negative if behind): 60ft(0.011), 330 ft(-0.007), 660ft(0.044), 1,000ft(0.096). MOV: 0.1287 seconds (approximately 46 feet).

Walsh faces Coughlin in the second round and they both ran the same ET. Coughlin gets lane choice - by 0.04 mph.