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Busch makes it 4 for 4; still perfect in Truck Series with win at Dover International Speedway

Kyle Busch looks on from the garage area during practice for the NASCAR Sprint Cup series auto race, Friday, May 30, 2014, at Dover International Speedway in Dover, Del. (AP Photo/Nick Wass)

Kyle Busch looks on from the garage area during practice for the NASCAR Sprint Cup series auto race, Friday, May 30, 2014, at Dover International Speedway in Dover, Del. (AP Photo/Nick Wass)  (The Associated Press)

Kyle Busch made it 4 for 4 in the Truck Series, dominating again to win at Dover International Speedway.

Busch was again the class of the field Friday and now has a checkered flag at Dover to go along with ones from Daytona, Kansas and Charlotte. He has 39 series victories.

Busch won from the pole for the third time. He started seventh at the season-opener at Daytona.

Busch does not a run a full season. He has won every race he entered. He can make it a tripleheader sweep with a win in Saturday's Nationwide race and Sunday's Cup race.

Matt Crafton, the defending series champion, won the only other Truck race at Martinsville. He smacked the Dover wall with about 43 laps left, ending his race.

Ryan Blaney was second, and Johnny Sauter, Brandon Jones and Joey Coulter rounded out the top five. Only seven trucks finished on the lead lap.