London - South African batsmen Ashwell Prince and Alviro Petersen piled on a record 501 runs for the third wicket in Lancashire's county championship match against Glamorgan on Monday.
It was the highest partnership for any wicket in the county's 151-year history, and only the 13th time in first-class cricket that any stand passed 500 runs.
Glamorgan finally parted the pair when Prince was out for a career-best 261.
Petersen, having batted for more than eight hours, then fell six overs later for 286 - also the best of his career - with Lancashire 625 for four on the second day of the match at the Welsh seaside resort of Colwyn Bay.
They declared on 698 for five, their fifth highest-ever score.