AEBF

Australian Eight Ball Federation

Australian Player Rankings – Explanatory Notes

by aebfcomau Player Ranking

Australian Player Rankings, The rankings are based on Nationals from the last 5 years. A player’s 3 most recent Nationals within those 5 years are considered for their ranking. This allows players to have years off (due to work, family etc) without impacting their ranking. Their most recent year played is weighted at 100%, next most recent at 75% and 3rd most recent at 50%.

Ranking Points Calculation

The first step is to calculate a player’s true percentage (the best reflection of their actual form): number of frames won divided by number of frames played (minus master breaks against), multiplied by 42 (this is the max number of frames a player can play at nationals). For example, a player that won 25 out of 35 frames with 2 master breaks against would be considered to have won 25 out of 33 frames, and would receive a score of 31.82 – this is effectively what they “would” have won if they played all 42 frames.

Note: If a player has only played 10 to 20 frames, the above score will be multiplied by 0.66 to reduce its weighting. For fewer than 10 frames, the above score will be multiplied by 0.33 to reduce its weighting.

The next step is to award players additional points for their performances in the following:

  1. Australian Singles
    1. Winner – 5
    2. Runner Up – 3.5
    3. Semi Finalists – 2.5
    4. Quarter Finalists – 1.75
    5. Last 16 – 1.25
    6. Last 32 – 0.5
  2. AEBF Plate
    1. Winner – 2
    2. Runner Up – 1.5
    3. Semi Finalists – 1
    4. Quarter Finalists – 0.75
    5. Last 16 – 0.5
    6. Last 32 – 0.25
  3. World Championships
    1. 80% or higher – 2.5
    2. 75% or higher – 2
    3. 70% or higher – 1.5
    4. 65% or higher – 1.25
    5. 60% or higher – 1
    6. 55% or higher – 0.75
    7. 50% or higher – 0.5

The next step is to award players additional points based on the reverse performance of their team – in other words, the higher their team finishes on the final ladder, the fewer points they receive. The purpose of this is to recognise that players in weaker teams have to compete against players in stronger teams, whereas the stronger teams avoid playing the players within their team.

  • Team Finishing Position
    • 1st – 0
    • 2nd – 0.14
    • 3rd – 0.29
    • 4th – 0.43
    • 5th – 0.57
    • 6th – 0.71
    • 7th – 0.86
    • 8th – 1

Multiply the player’s final score by 100 to determine their ranking points for that year.

Australian Team Selection

The order for the Australian Team is calculated in the same way as the above calculation for the Australian Ranking System except the final step (do not multiply by 100). Instead, players will receive one final allotment of additional points based on their ranking (50 points for the player ranked first and 0.25 points less for each position below). For example, a player ranked 10th receives 47.75 points to their score.

Note: A player must have played a minimum of 33 frames (prior to the removal of any master breaks against) to be eligible to be selected for the Australian Team.

Before proceeding down the order of the Australian Team as calculated above, the following are automatic entries into the Australian Team:

  1. World Singles Champion
  2. Australian Singles Champion
  3. Player of the Carnival
  4. The number 1 ranked player

Note: For clarity, the number 1 ranked player is selected from the updated Australian Rankings, which take into account the results of the current Nationals. The number 1 ranked player is only included in the Australian Team if they competed in the team event (in the relevant division) at the current Nationals.

Tie Breaker

If two players are tied on the same total points, then the player with the higher ranking will be chosen first. If the players also have the same ranking, then the tie breaker will be in order:

  • Whose team finished lower on the ladder after the round robin stages
  • Whoever has the highest score out of 42 (i.e. calculated from the team stats only)
  • Whoever shot higher at the most recent world titles (if only one played then they are selected if they shot at least 50%)
  • Whoever made it furthest in the Australian singles
  • Whoever made it furthest in the Australian plate
  • Whoever has played more nationals in the past 5 years

If it is still tied after the above process then the AEBF president (or person they nominate) will flip a coin to decide.

Player of the Carnival

The Player of the Carnival is calculated in the same way as the Australian Team order, except with the bonus points for world championship performance and Australian Ranking points removed from consideration. The reason is that these points have nothing to do with the performance of players at that particular Nationals. Any player within 0.49 points of the highest total will receive joint player of the carnival. This is to allow some flexibility/margin for error within the formulas, and to ensure joint player of the carnivals can still occur if 2 players do similarly well.

Adjustment for Behaviour

The AEBF executive committee can convene a meeting of the Disciplinary Panel to discuss a player’s behaviour if they are chosen in the Australian Team or as Player of the Carnival according to the formulas outlined in this document. That panel can decide whether that player should be excluded from selection that year due to the behavioural issues raised. If they are excluded, the next player in line will be selected instead.

Australian Player Rankings