Australian giant Jordan Mailata has achieved the improbable and made the reigning Super Bowl champion Philadelphia Eagles' roster.

It is an incredible feat considering the 21-year-old only played his first American football game four weeks ago and the list of talented, experienced Eagles players cut on Saturday.

Miracle: Australia's Jordan Mailata has pulled off the improbable and made the Eagles' final roster. Credit:AP

The NFL's 32 teams slashed their rosters from 90 players to 53 on Saturday (Sunday 6am AEST) before Thursday's start to the regular season.

Mailata is not getting carried away and knows he will have to perform or face the axe.