Ryan Blaney fastest in Dover Cup practice; Smith and Grala wreck

The top speeds all came from the second 20-minute session, which also proved the most dramatic.Blaneys average lap speed of 159.468 mph topped the overall speed chart, followed by Tyler Reddick (158.982 mph) and Chase Briscoe (158.478 mph) all from Group B.William Byron was fastest in the Group A with an average lap speed of 158.954 mph.Both Zane Smith and Kaz Grala hit the wall hard in ... Keep reading