Jason Holder and Matthew Waite struck unbeaten centuries as Worcestershire built an impressive lead against Kent on the second day of their Vitality County Championship match at Canterbury.
Joe Leach then took two early wickets to reduce Kent to 15 for two before the hosts rallied to reach 112 for two at stumps, a deficit of 506. Daniel Bell-Drummond and Jack Leaning were not out for the hosts. They made 54 and 43 respectively.
Earlier, Holder was unbeaten on 123 with Waite on 100 as the visitors declared on 618 for seven in their first innings, with Adam Hose adding 90.
Joey Evison was Kent's top bowler with three for 58, while Matt Parkinson again took one for the team with three for 201 in 44.5 overs.
Resuming on day two on 308 for five, Worcestershire subjected Kent's players and supporters alike to two sessions of unrelenting torture, offering little chance on a wicket that looked like chipboard.
The breakthrough came in the 117th over. Evison had a lbw appeal against Hose turned down, but the next delivery hit him low on the pad in front of the middle.
Rob Jones was on 37 when he flicked at Parkinson and was caught by Bell-Drummond at first slip, but it was 424 for seven at lunch and Holder then wreaked havoc, undeterred by fields with as many as eight men on the boundary.
The only intrigue in a hopelessly one-sided afternoon session was how many landmarks Worcestershire would tick off before declaring.
Holder smashed Parkinson down the leg-side for two to reach his half-century and took the innings to three figures with a single off Jack Leaning.
Waite was more measured in his approach, hitting just two boundaries on his way to his fifty, but the second half of his innings was pyrotechnic. He smashed Parkinson over mid-on for six to reach 99 and then hit a single to get to three figures before the visitors finally declared.
When Joe Leach removed Ben Compton with the fifth ball of the innings, Kent's reply got off to a grim start. Compton looked to have escaped when he edged the ball to third slip, but Jones, who'd dropped the ball in his lap, took the catch with his legs.
Zak Crawley then recorded his fourth single-figure score in five innings when Leach had him caught down the leg-side by a stumbling Gareth Roderick, but Bell-Drummond and Leaning responded with a partnership worth 97. Bell-Drummond reached 50 with a risky single off Brett D'Oliveira, but having seen off the new ball, Kent batted sensibly and looked much happier at the end of the session than they had been at the start.