The final Xfinity Series practice for the U.S. Cellular 250 ended with the No. 11 of Blake Koch at the top of the speed chart.
Koch, driving for Kaulig Racing, put up a speed of 134.105 mph around Iowa Speedway. A veteran of five Xfinity seasons of 23 races or more, Koch led Sam Hornish Jr., who won the last Iowa race, Erik Jones, Daniel Suarez and Brendan Gaughan.
Koch is currently 12th in the point standings through 18 races. His best result in 2016 is eighth at Richmond International raceway. He has two top-10 finishes this season after not having any in his previous 147 starts. A native of West Palm Beach, Florida, Koch’s best result at Iowa in 10 starts was 13th last June.
Jones has the best 10-lap average of the session at 132.459 mph. Koch has the fifth-best average at 130.304 mph.