The 43-year-old is hoping to make history by taking to the field for Colombia in their final group game against Japan
Capped 55 times for his country, the veteran custodian celebrated his 43rd birthday on June 21 and is in contention to make an appearance in his nation's final group game against Japan.
Coach Jose Perkerman is set to make changes to his starting XI after victories over Greece and Ivory Coast saw his side earn a place in the last-16 with one game to spare.
"Pekerman convinced me to continue playing. I will never forget that. If it wasn't for him, I would have retired two years ago,” said Mondragon, who was an unused member of the squad in 1994 but played all three group games in 1998.
“I feel privileged to be here, it was my best birthday ever.”
The current record-holder for the oldest World Cup appearance belongs to Cameroon’s Roger Milla, who played at the age of 42 years, one month and eight days.
However, despite being on the brink of making tournament history, Pekerman refused to confirm whether he would field the veteran.
“While I'm aware of the situation I have to analyse the entire squad,” he said.
“If it happens it would be nice, but is the not prime objective before the game.”
Mondragon, who left Deportivo Cali at the end of last season, is set to retire after the tournament in Brazil, bringing to an end a 24-year career that brought two league titles with Galatasaray and a Copa Libertadores with Independiente.