"Was" is the past tense of the verb "is".
A punctured ball is usually called a "burst ball" in soccer parlance.
American football has been around for a hundred years, burst in popularity in 1958 so I would say football careers were a viable option in the 1960's.
The simple past of burst is "burst" and the past participle is also "burst."
The past participle for "burst" is "burst."
The past tense of "burst" is "burst."
The past tense of "burst" is "burst" and the past participle is also "burst".
The past tense of burst is burst. The past participle of burst is also burst.
The past of burst is burst.
The present perfect tense of burst is "has/have burst". For example, "The balloon has burst."
The noun form of "burst" is "burst."
"Burst". The perfect participle has the same form as the infinitive "burst", as in "He had suddenly burst into the room."