Five was the magic number on Wednesday night, as Matt Vierling went 5-for-5 at the plate to end the Philadelphia Phillies’ five-game losing streak. There comes a point in every baseball season where the phrase “must-win game” starts to sound like a cliché. In actuality, each team only has a handful of truly must-win games each season. But there can be many more contests that feel like must-wins, especially when a team is right on the cusp of contention. Wednesday night was one of those contests for the Philadelphia Phillies. After five straight losses at the hands of the Marlins,…