This year's Call of Duty hasn't been announced, but some footballers have played it

Modern marketing techniques require hype for big budget games well before their official reveal - and so here's a group of American footballers who say they've played the still-unannounced Call of Duty 2019 at a private event (thanks, AGB).

War, shooting, killstreaks - all things we expect from this year's entry. If publisher Activision follows tradition, the game will be revealed via an event in the next month or so. Infinity Ward is on development duties this time around.

Fair enough.

Four athletes got the call (of duty) up to play. Here they are:

What could this year's game be?