When the Rangers traded for Jonathan Lucroy on Aug. 1, they knew they were getting one of the three or four best-hitting catchers in baseball and a guy who could control the opposing running game. They knew they were getting a catcher whose pitchers loved him, too, but they couldn't have imagined what he'd do for the Rangers staff. Thanks in large part to Lucroy's pitch-calling, the Rangers' starters, Yu Darvish and Cole Hamels, have never been better and Martin Perez, who looked like he might be broken before Lucroy's arrival, has flashed the form that made him the inspiration for so much hope in 2014 and 2015.