Think you know your Mets history? It's time to prove it. Every day on KinersKorner, there's a Mystery Met waiting to be identified. We won't tell you who it is. Your job is to figure it out by asking YES-or-NO questions. Was he a pitcher? Did he play shortstop? Was he an All-Star? Did he play for the Mets in 2015? Was he left-handed? The questions are up to you — but choose wisely, because you only get 20. And there's one more catch: three wrong guesses and you're out! The cl