I think Tanaka has been our ace this season. He's been durable, consistent (aside from the London game), and has pitched brilliantly in our biggest matchups. German has the stuff of an ace but we'll see how his arm holds up in the second half. He's already approaching his most innings in a season so I think his starts may be scaled down a bit, or he even may be sent to the pen and paired with an opener. Like Loaisaga, his biggest knock has always been his durability.