This is the 14987th most frequent Polish word.
rozgrywano
"Rozgrywano" means "was played" or "was being played."
The word 'rozgrywano' is used in a past tense, neutral form to describe an ongoing or repeated action in the past, which is playing the matches during the tournament.
W turnieju rozgrywano mecze przez cały dzień.
In the tournament, matches were played throughout the day.
Here, 'rozgrywano' refers to important sports events that took place repeatedly or regularly in the past on the mentioned old stadium.
Na starym stadionie rozgrywano jedne z najważniejszych zawodów sportowych w XX wieku.
On the old stadium, some of the most important sports events of the 20th century were held.
The usage of 'rozgrywano' here is to describe the actions of hosting various competitions, set in the context of past consecutive events during the Olympics.