Rookie Byron, 19, trucks star in 2016, gets first Xfinity win

Rookie William Byron grabbed the lead with just more than 20 laps left Saturday and won the American Ethanol E15 250 at Iowa Speedway in Newton, Iowa, for his first NASCAR Xfinity Series victory.

A seven-time winner last year in the truck series, the 19-year-old Byron broke through one week after a close loss to Cup star Denny Hamlin at Michigan.

Ryan Sieg was second, with no Cup regulars in the field. Tyler Reddick was third, followed by Ross Chastain.

■ Formula One: At Baku, Azerbaijan, Lewis Hamilton moved to second on the all-time list for F1 pole positions when he used a late surge to beat Mercedes teammate Valtteri Bottas in the Azerbaijan Grand Prix. The British driver’s 66th pole moved him one ahead of Ayrton Senna and two behind Michael Schumacher’s record of 68.

■ NHRA: At Norwalk, Ohio, Matt Hagan posted his third No. 1 Funny Car qualifier of the year with a track-record 3.865-second pass at 333.33 mph in the Summit Racing Equipment Nationals. Doug Kalitta led Top Fuel qualifiers, Greg Anderson led in Pro Stock and Matt Smith in Pro Stock Motorcycle.

■ IndyCar: At Elkhart Lake, Wis., Helio Castroneves won his 50th pole and third of the season, turning in a 1-minute, 41.30-second lap in Kohler Grand Prix qualifying at Road America. He edged Team Penske teammate Will Power, who won last year’s race, by .06 seconds.