Let's maybe slow down for a second. He's only 22, he's a catcher, and his career had been slowed down due to injuries. This is his first time performing at a very high level against good competition; there's no need to rush, especially if the team believes he can be an asset. With Russell Martin healthy for the time being, there's no need to potentially stunt Jansen's development by being needlessly aggressive. Martin's not going anywhere any time soon, there's plenty of time for him to give him advice in Spring Training or during the offseason. I'm not against a September call-up if he keeps tearing up AA for an extended period of time, but it's only been 81 PA, we should wait and see how his power, plate discipline and bat control skills continue to develop and adjust as he spends longer playing against tougher competition than he's ever seen before.