A record partnership of 274 from Mark Stoneman and Scott Borthwick put Durham firmly on top on day one of their LV= County Championship match against Middlesex at Chester-le-Street.
Opener Stoneman put Middlesex to the sword with 187, while Borthwick remained unbeaten at the close on 164, with the pair's second-wicket partnership a first-class record for the county.
Durham's first-day score of 411/4 is all the more remarkable considering they were inserted by Middlesex captain Chris Rogers after he won the toss - a decision the Australian opener will no doubt regret.
Stoneman took just 47 balls to reach his half-century, and while Keaton Jennings was bowled by Toby Roland-Jones for 16, Stoneman continued apace, with he and number three Borthwick reaching 140/1 at lunch.
The pair went from strength to strength after the interval, with Middlesex's bowlers all being put to the sword as they struggled to contain the attacking hosts.
Stoneman reached his century from 105 balls and went past his previous career best score of 131 before finally being caught at leg slip off the bowling of Stirling, and while Michael Richardson and Ben Stokes were also removed before the close, Borthwick continued, moving serenely to his fifth first-class century. His unbeaten overnight score of 164 is also a career-best.
Borthwick's runs have come at a perfect time as England name their squad this week for the first Test against Sri Lanka at Lord's, and he'll hope that his all-round abilities help sway the selectors ahead of the match on 12 June.
Title-chasing Middlesex will have a lot of work on their hands to recover in this match, which comes on the back of a washout against Sussex at Merchant Taylors' School last week.