To be match tough

What does “to be match tough” stand for in tennis?

What is the meaning of “match tough”?

Back in the day, players would consider “to be match tough” an asset to have played three, four, or more tournaments before a big meeting. Actually, they generally assumed it a prerequisite for success. And one of the ranking cliches right up into the 1980s was that a contender was “match tough” because he had been playing — and winning — a large number of matches. Conversely, if you weren’t match tough, your chances were downgraded.

Pittsburgh Penguins – Buffalo Sabres
Hockey. NHL
Toronto Maple Leafs – Los Angeles Kings
Hockey. NHL
Colorado Avalanche – Boston Bruins
Football. NHL
Ahaheim Ducks – Utah Hockey Club
Hockey. NHL
Rigas Futbol Skola – Auda
Football. Latvia. Virsliga
Real Madrid W – Celtic W
Football. Europe. Champions League Women
Twente W – Chelsea W
Football. Europe. Champions League Women
I. Ibragimov – N. Campos
MMA. PFL Battle of the Giants
M. Zaynukov – D. Sanders
MMA. PFL Battle of the Giants
W. Kazieczko – J. Stummer
MMA. KSW 99
V. Dukar – B. Kurek
MMA. KSW 99
C. Cyborg – L. Pacheco
MMA. PFL Battle of the Giants
F. Ngannou – R. Ferreira
MMA. PFL Battle of the Giants
J.Siroky – G. van Steenis
MMA. KSW 99
H. Kadimagomaev – Z. Mohsen
MMA. PFL Battle of the Giants
J. Eblen – F. Edwards
MMA. KSW 99
S. Vojcak – M. Martinek
MMA. KSW 99
B. Murtazaliev – T. Tszu
Boxing. IBF Title
M. Nikolau – A. Almabaev
MMA. UFC Vegas 99
M. Pereira – A. Hernandez
MMA. UFC Vegas 99