Year XI, Artícle1], No. 128

December 10th, 2021

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, not shown here, is used to build the "General Performance Index 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 2021 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 Index Ranking© or GPI Ranking©, which is used to order players by perfor-mance in the analyzed season. As already mentioned in other articles, the ATP Ranking must not necessarily coincide with the General Performance Index Ranking©, in fact, this rarely happens. This General Performance Index 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 the Russian Daniil Medvedev (RUS), making him the No. 1 in the General Performance Index Ranking© or GPI Ranking© of the 2021 season. The GPI Ranking© podium is completed by Alexander Zverev (GER) and Andrey Rublev (RUS).

Other players highlighted in the GPI Ranking© have been Casper Ruud (NOR), Stefanos Tsitsipas (GRE), Cameron Norrie (GBR), Jannik Sinner (ITA), Novak Djokovic (SRB), Felix Auger-Aliassime (CAN) and Alexander Bublik (KAZ) whom complete the Top 10 of the GPI Ranking©.

The following categories of tournament, which correspond to the 2021 season, have been included for the determination of the Top 100 of the General Performance Index Ranking© or GPI Ranking©: The tournaments have been developed on hard, clay and grass surfaces.

• Grand Slams: Australian Open, Ro-land Garros, Wimbledon, US Open.
• Davis Cup.
• ATP 250, 500.
• ATP Masters 1000.
• Next Gen ATP Finals.
• Nitto ATP Finals.
• Laver Cup (Unofficial exhibition tournament with no points for the ATP Ranking).

The ATP Ranking of the players, which has been considered for this report, is on De-cember 6th, 2021.

Table 1 shows the variations in the ATP Ranking and GPI Ranking© of the 150 best performing players in the 2021 season, regardless of the ATP Rankings.

In the Top 10 of the GPI Ranking© we note that Cameron Norrie and Alexander Bublik have been the players who more have advanced (52 and 15 places, respectively) compared to the 2020 season.

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

• Carlos Alcaraz (ESP): 166 places ↑
• Aslan Karatsev (RUS): 114 places ↑
• Sebastian Korda (USA): 100 places ↑
• Nikoloz Basilashvili (GEO): 74 places ↑
• Matteo Berrettini (ITA): 63 places ↑
• Frances Tiafoe (USA): 39 places ↑



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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