Leicestershire were 234 all out on day three of their County Championship game against Northamptonshire.
This left County 121 runs behind the Division Two leaders at tea.
Only a fine 64 from Shiv Thakor, on a pitch favouring seam bowlers, saved the follow-on after the hosts' 355 all out yesterday.
Leicestershire's batsmen endured a forgettable morning session at Northampton as they slumped from the relevant comfort of 89-1 to 134-5 at lunch, still requiring 76 runs to avoid the prospect of following on.
On a morning hit by a couple of rain breaks the County top order could find no answer to the seam bowling of Trent Copeland, who went into the break with figures of 4-43.
The only plus for Leicestershire was opener Greg Smith's half-century, though he would not be happy with the manner of his dismissal as he was caught at point cutting a short, wide delivery from Copeland.
Ned Eckersley fell lbw to the Australian for 25 and Josh Cobb lasted just two balls before he was bowled by David Willey.
County then suffered a major blow on the brink of lunch when skipper Ramnaresh Sarwan, who was looking in good touch, was trapped lbw by Copeland for 19.