8 January 2017 | AAP

Australia will have five men flying the flag at the Sydney International after Matthew Barton and Christopher O’Connell won their final qualifying match at Homebush.

World No.196 Barton defeated Mathias Bourgue 6-3 6-1 on Sunday to join Jordan Thompson, Thanasi Kokkinakis and Alex De Minaur at the Australian Open warm-up event.

Another qualifier, world No.237 Christopher O’Connell, made it a five-man contingent after defeating Spaniard Enrique Lopez-Perez 6-3 7-5 later on Sunday.

The Sydney-born Barton made headlines after progressing to the second round of the 2016 Wimbledon tournament in what was the 25-year-old’s grand slam debut.

At least one Australian will progress to the second round after doubles partners Thompson and Kokkinakis, who play in a doubles final in Brisbane on Sunday night, face off in round one.

The match will be the 20-year-old Kokkinakis’ first in 15 months after spending the majority of 2016 on the sidelines with a shoulder injury.