RECORD: 390*runs in 2005-06 by Greg Mail (200*) / Matthew Phelps (200*) for Sydney University 1-447 declared against Mosman 263 at Rawson Park in round 13 on 11-18 February 2006.

Winning the toss and batting, Sydney University lost its first wicket at 57. That brought together skipper Greg Mail and Matthew Phelps. At the end of 88 overs, the innings was declared at an extraordinary 1-447 with each player 200* in a massive unconquered partnership of 390. It broke the previous Sydney 1st Grade record of 333 which had stood for 110 years to the credit of Australian Test cricketer, Frank Iredale (140) and NSW representative, Wally Farquhar (223), playing for Central Cumberland (3-485) against Burwood (352) on 1 February 1896 at Parramatta. The Mail-Phelps record is the second highest partnership for any wicket in the history of NSW Premier Cricket behind Victor Trumper and Dan Gee’s first wicket record of 423. And in becoming a new record for any wicket with Sydney University, it also smashed the previous 2nd wicket partnership record of 236 standing to the credit of Ed Cowan and Ian Moran against Campbelltown-Camden in 2002-03.

https://www.cricconnect.com/profile/227/lyall-gardner/blog/1285/nsw-premier-cricket-the-record-partnerships-from-1893-to-2023-the-second-wicket-record