by Travelsonic
From the MTA website:
FARE PAYMENTSince you can buy and use a 1-way ticket, and use it to get there even if it is a game day, what happens then? Do they punch the ticket, give it to you? Do the ticket collectors take those numbered strips of paper you get back when a ticket is collected by the conductor? And if the former, what if you use a 1-way to a station beyond E. 153rd, and make no mention you are getting off at that station on a game day? I tried searching, but never found an answer to this, and I am curious - purely out of curiosity about random things I guess.
Ticket collectors will be posted on the station mezzanine level. Customers must show a rail ticket to exit the station and proceed to the game, or to access the station platforms and board trains after the game. Please hold on to your ticket throughout your travel time to and from the game.