Rotation carousel continues as debuting Seth Johnson struggles against Marlins

Final Score: Marlins 10, Phillies 1

Finding a No. 5 starter is a temporary problem, but one the Phillies must solve soon.

Playoff teams only need three — maybe four — really good starters to be a threat in October. But to get there, teams can’t afford to waive a white flag every fifth day.

The Phillies, barring an incredible collapse, will make the postseason for a third straight year. They have a pretty good hold on the division. What’s not a given, however, is a bye to the division round and it’s why the Phillies need a better solution for the last spot in the rotation.

In his major league debut, Seth Johnson, acquired alongside Moisés Chace from Baltimore in exchange for Gregory Soto,…