Serdaris won the Dally MRookie of the Year in 1989. At the end of the 1994 NSWRL season, he went on the 1994 Kangaroo tour, the last Western Suburbs player to ever tour with the Kangaroos. He was selected to represent New South Wales as a hooker for all three games of the 1995 State of Origin series and played his only Test for Australia in the subsequent series against New Zealand. Serdaris was a member of the 1996 Grand Final winning Manly-Warringah team which defeated St. George Dragons, 20–8. Although his Australian first-grade career came to an end in 1999, Serdaris returned to rugby league in 2002, joining French club Pia XIII.[citation needed]