This is a story of second chances.

This is a story of how the Mets began to navigate toward becoming a good defensive team this year and the Yankees began moving in the other direction.

It is not all about Jose Iglesias’ arrival (and career revival) in Queens and Gleyber Torres’ continued decline in The Bronx. But second base is called the keystone, and it has been key in the Mets’ rise from fielding horror show and the source of why the Yankees are fielding more questions about their glovework.

Let’s begin with this snapshot: Going into June 1 — the day after Iglesias was promoted and played his first game — the Mets were 29th out of 30 teams in defensive runs saved (DRS) at minus-34. The Yankees were fourth-best at plus-28.