Nick Callahan, Shaun Callahan and C.A. Bonnucelli’s Mandabra (Franklin Milby, $19.60) was an upset winner for the second straight week in the $22,000 Open Trot Wednesday at Harrington Raceway.

Dismissed at 8-1, Mandabra charged hard up the backstretch and wore down the early leader late for a half-length win over Spunky Vic and Man About Town.

Trained by Nick Callahan, the six-year-old Kadabra gelding notched his seventh win of the year.

Harrington’s leading driver, Ross Wolfenden, had four winners on the program.

(Harrington Raceway)