Yet again, the Dodgers had a tough roster decision to make on Tuesday, with utilityman Tommy Edman set to finally return from an offseason ankle surgery that has sidelined him for the first 2 ½ months of this season. But this time, it wasn’t one of the club’s young players that got the short end of the stick. Instead, the Dodgers have elected to designate veteran bench bat Santiago Espinal for assignment as the corresponding move for Edman’s activation, manager Dave Roberts announced Monday