For Ross Detwiler, the young Nationals left-hander who will be opposed by Mets righty Dillon Gee, the high-profile assignment of Tuesday's start is the product of a continuing progression.

For Ross Detwiler, the young Nationals left-hander who will be opposed by Mets righty Dillon Gee, the high-profile assignment of Tuesday's start is the product of a continuing progression.

For Ross Detwiler, the young Nationals left-hander who will be opposed by Mets righty Dillon Gee, the high-profile assignment of Tuesday's start is the product of a continuing progression.

For Ross Detwiler, the young Nationals left-hander who will be opposed by Mets righty Dillon Gee, the high-profile assignment of Tuesday's start is the product of a continuing progression.