Year X, Artícle1], No. 121

December 3, 2020

by Rubén A. Báez[2]

Full statistical report in pdf click here


General Performance Index©
(GPI: General Performance Index): "It is an index that measures the performance that a tennis player has had in a given period of time." This index, is used to make the "Gen-eral Performance Ranking© or GPI Ranking©".

This index considers, for its calculation, a number of aspects such as the number of played matches and won, the serves, the points won with the serves, the returns, the break points (saved and won) and the tiebreaks. Once the indexes are calculated for a given period of time, the 2020 season in this case, these indexes are sorted from the highest to the lowest and a ranking is established. This ranking is the General Performance Ranking© or GPI Ranking©, which is used to order players by performance in the analyzed season. As already mentioned in other articles, the ATP Ranking must not necessarily coincide with the General Performance Ranking©, in fact, this rarely hap-pens (In the case of Novak Djokovic it coincides this season). This General Performance Ranking© is very useful because it allows analyzing and quantifying the performance of an athlete in relation to the other players over a period of time.

The best performance of the season has been achieved by Novak Djokovic (SRB), making him the No. 1 in the General Performance Ranking© or GPI Ranking© of the 2020 season. The GPI Ranking© podium is completed by Andrey Rublev (RUS) and Stefanos Tsitsipas (GRE) (Table 2, p.9). Other players highlighted in the GPI Ranking© have been Diego Schwartzman (ARG), Felix Auger-Aliassime (CAN), Alexander Zverev (GER), Daniil Medvedev (RUS), Rafael Nadal (ESP), Ugo Humbert (FRA) and Dominic Thiem (AUT) whom complete the Top 10 of the GPI Ranking©.

The following categories of tournament, which correspond to the 2020 season, have been included for the determination of the Top 100 of the General Performance Ranking© or GPI Ranking©: The tournaments have been developed this year only on hard and clay surfaces.

•    Australian Open, Roland Garros and US Open.
•    Davis Cup.
•    ATP 250, 500.
•    ATP Masters 1000.
•    Nitto ATP Finals.

The ATP Ranking of the players, which has been considered for this report, is on Nov 23rd, 2020.

Table 1 shows the variations in the ATP Ranking and GPI Ranking© of the 100 best performing players in the 2020 season, regardless of the ATP Rankings. In the Top 10 of the GPI Ranking© we observe that 7 TOP 10 of the 2019 season are present in the Top 10 of the GPI Ranking© of this 2020 season. Likewise, 8 Top 10 of the ATP Ranking are present in the Top 10 of the GPI Ranking© this 2020 season, which shows that there is a strong correlation, in the case of men. There is a tendency to regularity in the performance of the Top 10 players, which would indicate that, once a player achieves to belong to this select group, they tend to continue to remain in it. The time and effort dedicated to continue belonging to the Top 10 will depend on each player, their expectations, injuries, imponderables, etc.

In the Top 10 of the ATP Ranking there are two subgroups, one of them more consolidated, permanent throughout the seasons (Djokovic, Nadal, Federer, Thiem, Zverev, etc.) and the other, more variable that is con-tinuously renewed. It seems that the important issue is not so much to get to belong to the Top 10 of the World Ranking, but to stay in it throughout the seasons. In the Big3, for example, Rafael Nadal has been a Top 10 since the 2005 season (16 seasons without interruption), a true feat, accompanied by Djokovic (13 seasons in the Top 10) and Federer (18 seasons in the Top 10) and counting ... the story continues to our enjoyment.

Other players who have had a great performance and who have advanced in the GPI Ranking©regard the previous season are:

•    Tommy Paul (USA): 133 places ↑
•    Jannik Sinner (ITA): 83 places ↑
•    Alexander Bublik (KAZ): 57 places ↑
•    Milos Raonic (CAN): 54 places↑
•    Daniel Evans (GBR): 46 places ↑
•    Casper Ruud (NOR): 43 placess ↑

For the rest of players, see table 1, page 6.

For the preparation of this article we have worked with those players within the Top 100 of the GPI Ranking© and who have played at least 10 matches in the 2020 season.

Table 2 (p.9) is the one that summarizes the general performance, General Performance Ranking©, of the players. The other tables show the "performance" in the respective aspects. Note that the order observed in the tables in this report does not coincide, in general, with the order of article No. 120, since the methodology is different. In article No. 120, it is used to order the players, the simple and absolute average, instead in this report, where the general performance and performance of the different aspects (services, returns, break points, etc.) a different methodology is used which is exclusive to Tennis Top 10© that is very precise in its calculations.

We invite the specialized readers in tennis to analyze the tables of this report because they are really interesting and express the performance of the players in this 2020 season.

Full statistical report in pdf click here

[1] Report elaboration based on data from official Websites:

[2] National Tennis Coach (Argentine Tennis Association), Bachelor of Business Administration, Certified Public Accountant, Post grades of Finance Management and Capital Markets, Master of Business Administration (IAE Business School, Austral University, Buenos Aires, Argentina).

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