On October 20, 2016, Prow was reassigned to the Penguins ECHL affiliate, the Wheeling Nailers, and he made his ECHL debut that night. He recorded two assists in the 4–3 loss to the Reading Royals. On October 22, Prow was promoted back to the AHL. He recorded his first AHL points that season, two assists, in a 6–1 win over the Syracuse Crunch after his promotion. On February 3, Prow recorded his first, and only, goal in a 5–2 loss to the St. John's IceCaps. Prow finished the season with the WBS Penguins and ended his rookie campaign with 16 points in 59 games.
