DES MOINES, Iowa — Pat Cashmore rushed for 160 yards and two touchdowns, including a 4-yarder with 21 seconds remaining, to lead Drake to a 31-24 victory against Jacksonville on Saturday.  Mike Piatkowski threw for 194 yards and two touchdowns for the Bulldogs (8-2, 6-1 Pioneer League), who ended Jacksonville’s 16-game conference winning streak.  Josh McGregor had 249 yards and three TDs passing for the Dolphins (6-3, 5-1), but he was intercepted four times.  Turnovers set up Drake’s tying and go-ahead TDs in the fourth quarter.  After the fourth interception of McGregor, Drake took possession at its own 42 and marched nine plays in 3:12 to Cashmore’s winning score.  Jacksonville took a 24-17 fourth-quarter lead on McGregor’s 48-yard TD pass to Josh Philpart. The Bulldogs punted on their ensuing possession, but the Dolphins’ Jean Bertrand fumbled on the return, and Jacob Dines recovered for Drake near midfield.  Given new life, the Bulldogs drove to Piatkowski’s game-tying, 8-yard touchdown pass to Joey Orlando.