Don Mattingly is “managing to win”...but should he be?

Miguel Rojas hammered a pitch to the back row of the left-field stands against Zack Wheeler in the first inning on Wednesday night to give the Marlins a lead. Meanwhile, Jarlin García was looking sharp in his MLB starting debut. With a few more insurance runs (against either Wheeler or a heavily worked Mets bullpen), this had the potential to be a rare wire-to-wire win for Don Mattingly’s struggling squad.

However, Wheeler settled down quickly, and these division rivals found themselves locked in a pitchers’ duel.

That meant a busy and stressful night for Mattingly. There is no obvious formula for navigating high-leverage situations with players who would be considered Triple-A depth in many…