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⚾ | Is the 5% turn in a series of withdrawals a good point or a failing point?


Softbank, which returned to the first half of the game in 4th place in the photo [Photo: Kazuto Fujiura]

Is the 5% turn in a series of withdrawals a good point or a failing point?

 
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Game difference

Game difference(Games, GB: games behind / games back)League matchAn index showing how far the upper team and the lower team are from each other.

baseball,basketballOften used in league games.

Calculation method

When deciding the top by the winning percentage, the formula is as follows based on the top.

  • Game difference = {(Number of wins for the top team-Number of wins for the bottom team) + (Number of losses for the bottom team-Number of losses for the top team)} ÷ 2

If the number of games is the same and the number of draws is the same, the relationship between the top and bottom is that the number of wins is top> bottom and the negative number is top <bottom, so the game difference isPositive numberbecome.However, between the top team with a small number of games and the bottom team with a large number of gamesNegative numberIt can be.

On the other hand, if the higher rank is determined by the number of wins, the above formula may be used, but it can be rewritten as follows, which can be expressed only by positive numbers during the calculation.

  • Game difference = {(Number of wins for the top team-Number of wins for the bottom team)-(Number of losses for the bottom team-Number of losses for the top team)} ÷ 2

In this case, the game difference will not be negative.

The game difference is used to show how many games the lower team B needs to catch up with the upper team A in a direct match.For example, in order for Team B with 10 wins and 4 losses to catch up with Team A with 9 wins and 5 losses, if they win 1 in a direct match, they will line up with the same 10 wins and 5 losses.At this time, the game difference between A and B is 1, but the difference between the number of wins and the number of defeats (the difference is positive = if the number of wins is greater, it is commonly called "savingsIf the difference is negative = the number of defeats is higher than the number of defeats,debtIf you compare the difference in the number of wins and losses of A with the difference of the number of wins and losses of B and the difference in the number of wins and losses of the two, there are two differences.That is,The 1 game difference is the number obtained by dividing the difference between the two wins and losses (savings or debt) by 2..

Task

The concept of game difference was bornAmerican Major LeagueBecause there is no draw in, the number of savings (difference in the number of wins) isWin rateIs linked with.However, there are draws in Japanese professional baseball, and the winning percentage is calculated by excluding the draw from the number of games.In this case, the value of winning or losing one game in the winning percentage varies from team to team depending on the number of draw games of that team.To give an extreme example of calculation, one win for a team that draws half of all games is equivalent to two wins for a team without a draw.This also works on the negative side, where one loss for a team that draws half of all games is equivalent to two losses for a team without a draw.However, it is unlikely that the situation will be so extreme.

Due to such differences in the ranking calculation, there are many situations in Japan where the game difference does not function as an effective index. Is very many.Therefore, the "game difference" in Japanese professional baseball is only an ambiguous guideline for roughly grasping the overall ranking situation. "If you win," it is not possible to determine which team will come to the top (or line up at the same rate) "only by the game difference."

As a problem caused by forcibly applying the game difference to the wins and losses including the draw, for example, there is a case where A has more savings than B, but B exceeds A in the winning percentage.

  • If Team A has 3 wins and 1 loss and Team B has 1 win and 0 losses and 3 minutes, Team A has a savings of 2 and a win rate of .750, and Team B has a savings of 1 and a win rate of 1.00.minusAlthough it is 0.5, the winning percentage is higher.

As an example of the final negative game difference2008 OfEastern LeagueAt the end of the seasonTokyo Yakult SwallowsIs in third placeYomiuri GiantsThere is an example of winning the championship by surpassing the winning percentage even though the number of savings is smaller.[1].

2008 Eastern League Final Ranking
RankingOUR TEAMmatchvictory敗北Draw(savings)Win rateGame difference
1 bitYakult9655347(21). 618
2 bit巨人9658362(22). 617.

In addition, as an example of the negative game difference due to the large difference in the number of draws and the number of games played between the corresponding teams at the end of the pennant race,2016 OfPacific League,2021 OfCentral Leagueand so on. The 2016 Pacific League is an example of a typical negative game behind, with the lead as of August 8th.Fukuoka Softbank HawksIs in third placeHokkaido Nippon-Ham FightersAlthough the number of savings is smaller, the winning percentage is higher in the form of minus 0.5 games behind.[2].

2016 Pacific League Rankings (as of August 8)
RankingOUR TEAMmatchvictory敗北Draw(savings)Win rateGame difference
1 bitSoftbank11769435(26). 616
2 bitNippon Ham11872451(27). 615.

The 2021 Central League has the most savings in the league as of August 8Hanshin TigersWas the leader, the second-placed giant with a 1.5-game difference, and the third-placed Yakult with a two-game difference to Hanshin, but the results on the following day (Hanshin ●, Giants ○, Yakult ○) showed that the giant and Yakult had a winning rate. Beyond Hanshin, Hanshin fell to 2rd place with the largest number of savings in the league, minus 2 games behind the Giants, and minus 3 game behind Yakult.[Note 1]..Professional baseball of the same yearNew coronavirusAs an infection control measure, the number of draws has increased dramatically because the match ends at the end of the 9th inning regardless of the deployment, and as of the end of August, 8 teams other than Hanshin have recorded more than 11 draws, while Hanshin has recorded more than 10 draws. Because the number of draws is 3[4], There is a big difference in the denominator (number of wins + number of losses) in the calculation of winning percentage.

2021 Central League rankings
As of August 8[5]
RankingOUR TEAMmatchvictory敗北Draw(savings)Win rateGame difference[Note 2]
1 bitHanshin9855403(15). 579
2 bit巨人98493712(12). 5701.5
3 bitYakult92463511(11). 5682
As of August 8[6][3]
RankingOUR TEAMmatchvictory敗北Draw(savings)Win rateGame difference[Note 3]
1 bit巨人99503712(13). 575
2 bitYakult93473511(12). 57310.5
3 bitHanshin9955413(14). 5729.

Display of game differences in the press

In the United States, mainly baseball (Major League,Minor league),basketball(NBA) Is used for the game difference.The American press always displays the game behind as a game behind the leader.

There are two main methods when the Japanese news media raises the standings of professional baseball.One is a method of displaying the game difference between the top team and each team based on the top team (the above-mentioned American method), and the other is a method of displaying the game difference with the latest top team. ..

The main media outlets that use the former method are:Asahi Shimbun,Nikkan Sports,Sports Nippon(Tokyo / Hokkaido / Kyushu version),Sports report,Sankei sports(Tokyo version),Weekly baseball,Nippon TV,TBS,Fuji Television Network, Inc(Professional baseball news= CS and some relays may use the latter),TV Asahi,Television Tokyo Channel 12, Ltd.,TOKYO MXand so on.

The main media outlets that use the latter method are:Mainichi Newspapers,Yomiuri Shimbun,Sankei Shimbun,Nihon Keizai Shimbun, Sankei Sports and Sponichi Osaka version, respectivelyNHKand so on.

Record

The following are examples of the maximum game difference between the 2nd and lower teams and the 1st place team.

footnote

注 釈

  1. ^ なお、次戦の結果(巨人○、ヤクルト●、阪神●)により、巨人の貯金数が阪神を上回ったのに加えて、阪神が55勝42敗3分で勝率.567、ヤクルトが47勝36敗11分で勝率.566と、阪神が敗れながらもヤクルトの勝率を上回って2位に浮上したことでゲーム差におけるマイナスは1試合で一旦は解消された[3](After that, there is a negative game difference depending on the outcome).
  2. ^ Game difference with the leader
  3. ^ Game difference with the leader

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