The Marlins are in an enviable position with star J.T. Realmuto. Because of the dearth of quality catchers across Major League Baseball, there are at least a half-dozen teams who have both the need and prospect capital to battle in serious trade negotiations. On the other hand, the Fish have minimal financial commitments beyond the 2019 season and expect a windfall of revenue beginning in the 2020s when a new local television deal kicks in. They can meet Realmuto’s asking price on a long-term extension (though for the time being, the two sides seem far apart).