The good news about the Nats (whether it's their medical staff or management or luck) is that they're consistent enough that we know what will happen - Zim will be with the team for most of this trip, constantly a day or so from playing, feeling better all the time. Then he'll feel something strange or suffer a setback during a workout, so he'll head back east ahead of the team to have tests done. Whether he goes on the DL after the first or second re-testing is up in the air.