Agostinis played in the National Soccer League in 1972 with Toronto Italia.
[1] He spent time back in Italy with Serie D side, AC Monfalcone, before returning to British Columbia to finish his degree at Simon Fraser University, where he also played.
Agostinis toured with national team, but was not featured on the final roster.
[5] The following season he played in the North American Soccer League with Tampa Bay Rowdies.
[8] Agostinis joined the St. Pete Thunder Bolts of the Southern Soccer League in November 1979.