WEST HAVEN — Successful Canadian dirt track driver Mat Williamson put another notch in his belt at Devil’s Bowl Speedway on Saturday with a late-race charge to nail down the inaugural Slate Valley 100 and earn a $10,000 payday. Addison County and Brandon drivers did not win at Devil’s Bowl on Saturday, but earned a number of top-10 results. The Slate Valley 100 for Big Block and Small Block Modifieds was not a cakewalk for Williamson. Matt Sheppard paced the field early before Mike Mahaney took over at lap … (read more)