Jim King Jr. and Tim Tetrick's Powerful Charger ($8.40, Victor Kirby) notched his seventh win of the year Wednesday in his 1:54.1 triumph in the $16,000 Open Trot at Harrington Raceway. 
 The 7-year-old Powerful Emotion gelding stalked pacesetter Tough Mac throughout the mile before edging clear of that rival in the final strides. Rolls Blue Chip finished third.
 Trained by co-owner King Jr., it was the 29th career win for Powerful Charger. It is sure to be an eventful week for trainer King Jr., who trains Wakizashi Hanover (5/2, Tim Tetrick), a North American Cup elimination winner who will compete in the $1 million final at Mohawk Racetrack (Ontario, Canada) on Saturday June 20.  The North American Cup Final is slated as the 12^th race on the Mohawk program with an estimated post time of 10:40 p.m.
 Kirby had three driving wins on the program. Art Stafford Jr. had two wins.