WILKES-BARRE — Tom Sestito has made a career out of battling opponents on the ice. The veteran Wilkes-Barre/Scranton Penguins forward is still among the most physical players in the game, but this postseason, in addition to the Providence Bruins, Sestito is battling another foe: Father Time. That’s why the 29-year-old Sestito wasn’t bothered when Pittsburgh sent him, along with forward Josh Archibald and defenseman Cameron Gaunce, to Wilkes-Barre/Scranton just in time for last Friday’s Game 1 of the first-round playoff series against the Bruins. In Pittsburgh, Sestito was a healthy scratch.