DiComo Why were the Mets willing to give up three notable pieces for a rental reliever in Tyler Rogers? A few reasons, canvassed from talking to various folks around the league: Rogers is really, really good and gives the club a different look out of the bullpen. He throws from a super unique arm angle, which is an asset in October. He's also extremely durable and, unlike most Mets relievers, is stingy with walks. A championship-caliber arm Although the Mets gave up three players, none have massive ceilings. The Giants could possibly stretch Buttó back out in the future, which might enhance his future value. He does have five years of team control left. But his walk rate has held him back thus far in his career Scouts see Gilbert as a toolsy player who could become a steady regular, but not likely more than that. There are durability concerns there. Tidwell likewise still must prove that he's a starter -- not a reliever -- at the highest level. He hasn't done that yet. None of this is to intimate that the cost to acquire Rogers was cheap. It wasn't. But the price for high-impact pitching is always steep and seems especially so this year. At the end of the day, the Mets improved themselves without sacrificing the best of their farm system.