|Specsavers County Championship Division One, Kia Oval, day three|
|Lancashire 287 & 203-8: Procter 76, Petersen 56; Footitt 5-49|
|Surrey 480: S Curran 96, Burns 88, Sangakkara 67, Davies 59, Sibley 56; Lilley 5-130|
|Lancashire (4 pts) lead Surrey (7 pts) by 10 runs with two first-innings wickets left|
Lancashire collapsed alarmingly after tea at The Oval to leave Surrey on the brink of a final-day victory.
Trailing by 193 when Surrey were bowled out for 480, Lancashire were well set on 167-2 midway through the evening session after half-centuries from Luke Procter (76) and Alviro Petersen (56).
But six wickets then went for just 26 runs, as Surrey's England hopeful Mark Footitt claimed a season's best 5-49.
The former Derbyshire left-armer took three for three in one 28-ball burst.
The hosts had earlier elected to bat on until after lunch, adding a further 126 to their eventual total, although day three had started with heartbreak when teenage all-rounder Sam Curran missed out on his maiden first-class century by four runs.
Footitt made the first breakthrough when in-form opener Haseeb Hameed, who had gone past 50 in eight of his last 10 innings for Lancashire, edged behind before Liam Livingstone also followed cheaply, gloving a snorting lifter from Stuart Meaker.
Rain then led to a slightly early tea interval, shortening the afternoon session to 29 overs and thereby extending the evening session.
But, with Surrey's lead cut to 26 runs, Petersen aimed an over-ambitious expansive drive against Footitt to pick out extra cover.
Without addition, in Footitt's next over, skipper Steven Croft followed a leg-cutter to edge to Kumar Sangakkara diving forward at slip, then Procter walked across his stumps to depart leg before as he missed a leg-side flick.
Home skipper Gareth Batty was then rewarded with two wickets in five balls before Footitt's fifth wicket when Adam Lilley nicked an expansive drive to slip.
There was suddenly hope for Surrey of wrapping up an innings win inside three days against the side they were promoted alongside last September, but Lancashire survived the last four overs without further alarm.
Surrey fast bowler Mark Footitt told BBC Radio London:
"I hit a nice rhythm at a good time. Luckily, the nicks kept coming and people caught them. It's a really nice feeling to get my first five-for for Surrey.
"It's been a frustrating season for me getting injured early on. I've worked really hard to get where I am now. It's nice to have pulled my finger out for the lads at last.
"I got a nice partnership going with Gareth Batty, who kept things really tight. What really set it up for us at the start of the day was Sam getting his 96.He was so unlucky not to get his hundred, but he helped get our lead up to around 200 which gave us scoreboard pressure."
Lancashire coach Ashley Giles told BBC Radio Lancashire:
"We played incredibly well to get to the point we were at at tea. Procter and Petersen were building a really good partnership, but when you lose one wicket you're always at risk of losing a clutch, and that's what we did.
"We have been outplayed in the match. Winning the toss was probably our best moment, if I'm not being too harsh. We have played ok, but we can't afford to play just ok against good teams.
"What we've done well is build partnerships. In this innings alone, we've had a 49, a 40 and then a 78 partnership. But we've really got to convert those into 150s."