This was a media release issued after the day's play on Saturday 3 February 2007:

Phil Jaques today scored 321 in 1st Grade against North Sydney at North Sydney Oval. It is the second highest score ever in 1st Grade in Sydney – a tantalising 14 runs short of Victor Trumper's 335, made for Paddington against Redfern at Redfern Oval in 1902-03. He smashed the previous highest score for Sutherland – 212 made by Matthew Bradley in 1999-00.

https://www.cricconnect.com/profile/294/sutherland-district-cricket-club/blog/2527/phil-jaques-scores-incredible-321-vs-north-sydney