In conjunction with MMR, uncertainty determines your range of potential opponents, and that uncertainty can increase or decrease, thereby widening or narrowing that range, depending on the outcome of each game. If no player is in the queue who is within your uncertainty range, that range will gradually increase until a match is found.
Uncertainty also determines how drastically MMR changes after a match. Generally speaking, the system becomes more uncertain about you when you beat a player whose MMR is higher or lose to one with a lower MMR, and less uncertain when you beat a player with a lower MMR or lose to one with higher MMR. The curve colored blue represents the deviation of skill that this player may exhibit over time. Any player knows that there are external factors that may affect your play: playing on tilt, being unusually focused, getting distracted.
The uncertainty curve is a graphical representation of that level of inconsistency. Players who are found to be close to your MMR which would be near the peak of your curve should statistically be a close match.
The example image above shows a second player that has been matched with the first. The overlapping area represents the statistical probability of a close match. Based upon the size of the overlapping area, if Player 1 is playing well and Player 2 is playing poorly, the outcome would be roughly Note that generally speaking, the uncertainty value will steadily drop over time.
After enough games, it will settle at a minimum value which is still enough to move gradually across leagues. Placement Matches When starting a new team or game type, your MMR from other game types is used as a starting point for your first placement match.
After the first placement match, that new team or game type's MMR is separate. This allows players to immediately start playing against players close to their skill level from the very first game. It is possible to be placed in any league except for Grandmaster, which requires a promotion.
There are two types of placement matches: those where you have no prior MMR history you play 5 placement matches and those where your MMR is preserved from either the current or previous season you play 1 placement match. In the former case, placement is conservative, meaning the system is reasonably confident that you are at least as good as your assigned league, or perhaps better. In the latter case, placement is more accurate using your previously-established value as a starting point.
MMR transcends leagues. That means that even when you are initially placed in a league, your MMR is not necessarily at the bottom of that league.
Rating Calibration Phase Players with no rating history, normally characterized by 5 required placement matches, will have a greater rating variance per match as the system attempts to rapidly assess their correct MMR. This is called their "rating calibration" or "provisional" phase, and lasts for 25 games. During those first 25 games, league promotions are inhibited. In addition, initial league placement is very conservative, usually a full league below the initial estimate.
Team Matchmaking It is believed that when a team is first formed, the MMRs of all members are averaged to form the team's initial MMR during the first placement match. After that first placement match, the team's MMR is separate per normal. For Random Teams, it is likely that the MMRs of all members are averaged first, then an opposing team with a similar MMR based upon a degree of uncertainty is located.
Promotion By outperforming the rest of your league, it is possible to get promoted into a higher league. If you are in Bronze but playing against Gold players, you would expect to be promoted to Gold, but that doesn't always happen immediately. First, players in rating calibration cannot be promoted. The rating calibration phase makes it possible for players to potentially face opponents far beyond their current league, but remember that MMR is what matches opponents together.
Second, when your MMR crosses the lower boundary of the next league, you will be promoted into that league. Any in-game behaviors or statistics beyond winning, losing, and the opponent's MMR are not relevant to the system. This, along with the fact above about MMR transcending leagues, explains why some players early in a season may appear to have over a hundred points after only a couple of games -- they were placed just below the league boundary and were promoted, receiving the point reset.
Grandmaster League The Grandmaster League is a special league consisting of the top players in a region as determined by moving average of MMR. After one week has elapsed in a season, the top players with the highest MMRs will become Grandmasters. Slots are reserved for the highest-MMR players, but if a player surpasses a reserved player's MMR before the reserved player can win his promotion game at the time the league opens, his slot can be taken. Contender League Contender League is a special parallel league introduced in Patch 3.
Contender League has no unique badge or icon since it is possible to be in Contender League and Master League simultaneously. Unranked Play Players who elect to play Unranked are matched against both Ranked and Unranked players, except in the case of the highest end of the ladder where the player pools are separate. After your first Unranked game, your two MMRs will remain separate. Overview The last piece of the Starcraft II ladder puzzle is activity. Blizzard always refers to their league populations in terms of "active players", and this is because they want a relatively even spread of players across all leagues again with the exception of Master which is designed to be smaller.
Although the MMR requirements to join each league are constant, the skill level required to move into a higher league will change depending on the currently active population. This allows it to function as an activity metric, and by extension determine whether a player is active or not for the purposes of league apportionment. The lower a player's remaining bonus pool, the more accurate his MMR.
Furthermore, the league boundaries can be adjusted by Blizzard on the fly in the event that populations need to be normalized. League Tiers Patch 3. The League Promotion Indicator that appears after playing a game denotes your progress to the next Tier. Tier 3 is the lowest, Tier 1 is the highest. If a player is in Tier 1 and gets promoted, they are moved to Tier 3 of the next-highest league.
The one additional requirement to getting promoted is that you must play a game, because league changes only occur after a game.
Seasons last several months. During a season transition, bonus pools and points are wiped, but MMR carries over to the next season. MMR is only carried over for one season. If players do not play any matches in the current season, and are not placed, the MMR will not carry over into a third season, effectively starting them fresh in the system. This means that if you did not play any 1v1 for one season, but did play a Random Team game, your 1v1 MMR would still carry over to the next season, and vice versa.
League Lock A week before the end of a season, promotion and demotion will be disabled. This is known as a "league lock," the purpose of which is to allow players to establish a final division rank for themselves.
During a league lock, bonus pools will stop accumulating but players may spend their remaining bonus pools until the end of the season. Milestones At the time of the season rollover, you will receive an end-of-season Feat of Strength based upon your final division rank in each game type and team. Players conduct a single match. The match is primarily to determine which players are still active.
One's ranking is based primarily on one's MMR from last season. Seasonal placement matches place players in a league depending on their current MMR following the placement match, and do not require crossing a confidence buffer. This can mean that some players may find themselves close to the top of their new league, and can be promoted in as little as one game after their placement in the new season.
Players who only have to play a single seasonal placement match are not subject to rating calibration. This will resolve itself the next time that player plays a game. There is a bug where occasionally, a player's Master league bonus pool amount will be shown, rather than their actual consumable pool.
This is only a display bug. Relogging usually resolves it. Pre-game and Post-game Favoritism Discrepancy Fixed in 2. The accurate information can always be found on the score screen. Blizzard is aware of this bug, but it cannot be consistently reproduced.
The fix for this was to remove the pre-match "Favored" display. NOTE: This post will be updated with additional information as it becomes available. Thanks to SDream and Vanick for contributions, proofreading, comments, and edits. Thanks to Shadowed for SC2Ranks. Thanks to aksfjh for the PDF version.
However, it's instead possible that there is a certain activity threshold, since this is mentioned in the fine print at the bottom of each Top blog post.
Note, however, that when the Grandmaster league is introduced, it is highly probable that it will encompass the Top MMR moving average players, just as it is for lower leagues. Oh good call. These names can be any reference to the StarCraft universe: the original game ex. The top eight players in each division qualify for tournament play. The pro league does not have divisions. Prior to season 4 not all divisions were created equal, but this wasn't transparent.
Blizzard removed these tiers, meaning someone's rank in their division is giving a more accurate representation of their skill. Ladders are compiled within the leagues.
A structured party can participate in the leagues and ladders system. They will be placed into games by the automated matchmaking system. StarCraft Wiki Explore. Wiki tools. Explore Wikis Community Central. Register Don't have an account? League StarCraft II. View source. History Talk 4. Do you like this video? Play Sound. StarCraft II Battle. Accessed Situation Report: Patch 1. Blizzard Entertainment. You will have to play a couple of games to evaluate your level and then you will be put in a league that fits you best.
Each league will also have a lot of subdivisions. After a period of time your skill level will be reevaluated and you will either go to a higher league or a lower one. Gold, Silver, Bronze Leagues. Heart of the Swarm League Percentages. Patch 1. Divisions have no intrinsic value other than to give you 99 people to compare against from your league. There are about 1 million players on starcraft 2 so you can't have say players roosters, that's why they divided it.
For a complete ranking of everyone go there. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Can someone explain the divisions in StarCraft 2 for me? Ask Question. Asked 11 years, 2 months ago. Active 9 years, 4 months ago.
Viewed 6k times. Do the divisions really mean anything? Can you move from one division to another? Can I choose one? How do you move up within your division? How do you view other players in your division? If these should be asked as individual questions, please let me know. Improve this question. Related question asked today: gaming. Add a comment. Active Oldest Votes. They poll your skill randomly and decide weather or not to bump you one way or the other.
You can on occasion have matches against people from other leagues, to test your skill level.
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