Hall and Willey to the fore
Captain Andrew Hall and David Willey each took two wickets as Northamptonshire continued to boss their LV= County Championship match against Gloucestershire.
Scotland international Kyle Coetzer made 96 off 236 balls, including 12 fours, as Northants added 109 to their overnight total before finally being bowled out for 411.
In reply, Gloucestershire struggled to close on 156 for six, still 255 runs behind their opponents and needing another 106 to avoid the follow-on, with Willey taking 2-32 and Hall 2-33.
Northants began the day looking strong on 302 for four with Coetzer resuming on 81 and Hall beginning his innings.
Hall made just a single, however, before he was trapped lbw by Ian Saxelby in the third over of the day.
Northants wicketkeeper David Murphy made only eight before he departed in the same manner to give Liam Norwell his first wicket of the season.
Coetzer then fell just four runs short of a second century of the summer when he smashed Gloucestershire captain Alex Gidman to Ed Young at deep midwicket.
The collapse continued when Willey, who made 18, was bowled by Norwell as the visitors clawed their way back into contention with Northants on 366 for eight at lunch.
Lee Daggett was the next to perish, but only after compiling a painfully slow 15 off 80 balls, when he missed his drive off Kane Williamson to be bowled.
Young then took the final Northants wicket when David Burton played on to his furniture, leaving Con de Lange unbeaten on 40.
Burton, playing his first championship game of the season, struck in the fourth over of Gloucestershire’s reply when he emphatically bowled Benny Howell for four.
New Zealand international Williamson then made only seven before edging Willey on to his leg stump.
The visitors’ problems deepened when Alex Gidman departed for four, superbly caught by Hall at first slip off Willey to leave Gloucestershire on 38 for three at tea.
Chris Dent departed on 42 when Stephen Peters took a good low catch diving forward at extra cover off Daggett.
Ian Cockbain followed for eight when he edged Hall to Peters, who this time was standing at first slip, before Hall struck again when he took out Will Gidman’s off stump.
Hamish Marshall and wicketkeeper Jonathan Batty survived the final nine overs and will resume tomorrow on 49 and nine respectively.