Call of Duty: MW3 Ladder : LIVE

This is a Elo Rating System Ladder
More info about the ELO Rating System can be found here, only a teams wins/losses/draws are used when calculating your ratings, a large/small score margin has no effect currently.
A K-Index of 64 is used, starting rating of 1400 and score distribution of 400 is used.
You can challenge teams that are within 300 of your ELO Rating above or below.
Once your team gets to the top 10, you are only able to challenge teams that are in the top 30 places (as well as within 300 rating).

If you win a defending match you are protected for 2 days (no one will be able to challenge you).
If you win a challenging match you are protected for 12h (no one will be able to challenge you).
If you lose a defending match you are vulnerable for 12h (you will be unable to challenge).
If you lose a challenging match you are vulnerable for 2 days (you will be unable to challenge).
You cannot play the same team twice in a row.
Time given to accept a match: 2 days
Team members required to challenge: 5
Players are allowed to be in 1 team at a time
Teams are able to challenge up to 3 teams at once.
Teams can be challenged provided they are in less than 4 matches at once.
For this ladder, the challenging team chooses their map when challenging then the defending team chooses their map, both maps are then played at the scheduled match date.