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The Association of Tennis Professionals (ATP) is the governing body of the men's professional tennis circuits – the ATP Tour, the ATP Challenger Tour and the ATP Champions Tour. It was formed in September 1972 by Donald Dell , Jack Kramer , and Cliff Drysdale to protect the interests of professional tennis players , and Drysdale became the ...
The 2025 ATP Finals (also known as the 2025 Nitto ATP Finals due to Nitto sponsorship) is a planned men's tennis tournament that is scheduled to run from 9 to 16 November 2025. It is set to be played on indoor hard courts at the Inalpi Arena in Turin , Italy for the fifth consecutive time, and would be the season-ending event for the highest ...
The ATP Challenger Tour, known until the end of 2008 as the ATP Challenger Series, is a series of international men's professional tennis tournaments. It was founded in 1976 [ 1 ] as a replacement for the ILTF Satellite Circuit (founded in 1971) [ 2 ] as the second tier of tennis.
[4] The ATP's new ranking system was quickly adopted by men's tennis. [5] While virtually all ATP members were in favor of objectifying event participation, the system's first No. 1, Ilie Năstase, lamented that "everyone had a number hanging over them", fostering a more competitive and less collegial atmosphere among the players. [6]
Djokovic has won a record 40 ATP 1000 titles and he is the only player to complete the Career Golden Masters by winning all ATP 1000 tournaments of the tennis calendar, a feat he achieved twice. He also holds the record for most ATP 1000 titles won in a season with six titles in 2015.
The hydrolysis of ATP into ADP and inorganic phosphate ATP 4-(aq) + H 2 O (l) = ADP 3-(aq) + HPO 2-(aq) + H + (aq) releases 20.5 kilojoules per mole (4.9 kcal/mol) of enthalpy. This may differ under physiological conditions if the reactant and products are not exactly in these ionization states. [15]
ATP is quantified by measuring the light produced through its reaction with the naturally occurring firefly enzyme luciferase using a luminometer. The amount of light produced is directly proportional to the amount of ATP present in the sample. ATP tests can be used to: Control biological treatment reactors; Guide biocide dosing programs
On 3 May 2021, Durai Murugan, the general secretary of the DMK, called for a meeting of all the party's newly elected MLAs on 4 May 2021, at 4 PM, in Anna Arivalayam (the DMK headquarters, Chennai). In the meeting, the 133 MLAs formally extended their support to Stalin's appointment as the DMK's head at the Tamil Nadu Legislative Assembly ...