While looking at this photo http://www.nycsubway.org/perl/show?100342 of the IRT Woodlwan line (# 4 train) a bit north of the 161st Street station, I see there are two abandoned trackways that descend and turnout to the west in the vicinity of the new Yankee Stadium.
Is that the remnant of the connection to the IRT Ninth Avenue Elevated Line?
Is that the remnant of the connection to the IRT Ninth Avenue Elevated Line?