RANKED OVERVIEW:
Ranked players are organized into 6 groups, starting with Rookie at the lowest, then Veteran, Elite, Pro, Master, and finally Legendary at the top.
Each of these groups with the exception of Legendary is broken up into 5 ranks designated with roman numerals, from I to V. I is the low end, V is the high end.
Players make their way up the ranks by winning ranked matches, either playing solo or queuing up with teammates of similar rank.
For balanced matchmaking purposes, there are restrictions as to how far apart in rank players can be when queuing up for a Ranked match.
RANKED QUEUEING RESTRICTIONS:
For all ranks Rookie through Elite, you can queue for Ranked matches with players that are 5 ranks above or below you (for example, Elite V players can queue with players ranked Veteran V to Pro V).
Pro I-IV players can queue for ranked matches with players that are 5 ranks below, or 4 ranks above (for example, Pro IV players can queue with Elite IV-Master III players).
Pro V players can queue with players that are 5 ranks below, or 3 ranks above (i.e. Elite V-Master III).
Master I-II players can queue with players that are 4 ranks below, or 3 ranks above (for example, Master II players can queue with Pro III-Master V players).
Master III-V can queue with players that are 4 ranks below, and any rank above including Legendary (for example, Master V players can queue with Master I to Legendary players).
Legendary players can queue with players Master III and above.