15/11/2014: Notice, It might happen that suddenly all your
stats vanish, DO NOT start a new match, simply
shut down the game and then re-open it until your stats are back. Doing otherwise will over wright your progression and you
WILL lose them (2 cases confirm of this glitch happening). If you do as I say, everything will be fine!
*
Important: Some people's achievement tracker seems to be glitched but reports shows that even if your app displays no progression and you are actually doing your matches, the achievement will update/pop at some point. Be patient and don't worry about it.*
First off, I want to say that you can always decide to do this legitimately but since most of you are probably looking for a faster method, I will only provide the fastest way to get your 2000 ranked matches done.
Go in
Ranked match and as soon as you find a game, press
ready and the moment you get to the
character screen, press start 
and select
''quit''.This will count as
one match done (
note: the moment you get to the actual character screen, the achievement progression increases so no worry about being too quick to quit).
Boosting: Obviously, this is faster when there is a lot of people online but still very doable with a friend. If you wish to
create a session, set up an
unlimited one so everyone has increased chances of being matched with a player.
Good luck and I hope you can bear the grind
(I recommend to do a bit each day, this way it's not that bad).