The victory in the Nationwide Children's Hospital 200 made the 21-year-old Buescher the third rookie to win in the series this year.
Buescher, driving the Roush Fenway Racing Ford sponsored by — fittingly — Nationwide Children's Hospital in nearby Columbus, took the lead from Brendan Gaughan and weathered a restart to hold on the rest of the way.
There were questions he could finish without running out of fuel, but he had enough to make a celebratory run the wrong way down the home straight.
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