Ireland U19 skipper Harry Tector scored 118 for Randwick Petersham in their ongoing Second Grade match against the University of New South Wales.
The 18 year-old hit 15 fours and 3 sixes in his 188-ball stay, allowing his team to declare on 388 for 9 after 80 overs.
He shared a fourth wicket stand of 159 with Matt Calder, who also made a century.
The innings was a welcome relief for Tector, who made just one on his debut for the Randy Petes last week in their 8-run win over St George.
"It was nice to get a score today and take some of the pressure off myself that I put myself under," said Tector.
"Thereís always an expectation on you to do well when you go somewhere new for the first time when you have played for the 19s or Wolves or whatever so to do that today was great after a pretty bad start last week."
Randwick Petersham are based in Coogee, Sydney, and formed an alliance with Cricket Ireland in 2015, where the Irish used their ground as a base for the World Cup.
Harry is the latest recruit from Ireland to play for Randwick Petersham, with Barry McCarthy, Andrew Balbirnie, Peter Chase and Jack Tector others to have featured.
"Iím having a great time out here. Everybody at Randy Petes are great blokes so thatís helped me settle in well.
"Hopefully next round I can put together another big score and really try force my way into the first team which would be great.
"I start the International Cricketers Programme next Monday, the 8th of October, so that should be a great ten-week way to improve my game whilst Iím here."