Are the Reds seeing a new and improved Luis Castillo?

Luis Castillo threw a complete game 2-hit, 1-run game this weekend in a win over the St. Louis Cardinals. During the game, and even after the game I saw plenty of posts on twitter about how Castillo was back, or how long it’s been since “we’ve seen this version of Castillo” – and of course when a player has a big game you’re going to see those kinds of reactions. But it also got my brain wondering: Is he back? Is he different? What’s going on here?

Luis Castillo was acquired prior to the 2017 season from the Miami Marlins in the Dan Straily deal. After spending most of the first half of the season in Double-A Pensacola, the Reds made the decision to call up the right-handed starter without…