YORKSHIRE are chasing victory over Durham and a 16-point lead at the top of the LV= County Championship table after an impressive third day's bowling display at Headingley.
Bradford's leg-spinning all-rounder Adil Rashid led the way with 4-73 from 20 overs as the reigning champions, in reply to 426, were forced to follow-on having been bowled out for 231 after tea.
These were new father Rashid's best figures at Headingley for four years, and they were complemented by two wickets apiece for Ryan Sidebottom, Tim Bresnan and Steve Patterson.
Durham started their second innings 195 runs in arrears with 26 overs of the day remaining, and they reached close at 59-1 – a deficit of 136.
Andrew Gale's side will have to produce an equally impressive bowling display tomorrow in order to claim their fifth win of the campaign and put daylight between themselves and second-placed Nottinghamshire after 11 matches.
Yorkshire will be five points clear if they have settle for a draw, although Durham captain Paul Collingwood said his side face an uphill battle with the pitch deteriorating significantly.
Durham resumed this morning on 50-1, and they lost four wickets in the morning, including Michael Richardson caught and bowled by Rashid with the last ball of the session.
Rashid, who missed the last two Championship matches against Sussex and Warwickshire while awaiting the birth of a baby boy, claimed three more wickets in the latter stages of the afternoon to stymie a Durham recovery.
Collingwood (64 not out) and Phil Mustard shared 51 for the sixth wicket immediately after lunch to advance the score from 119-5 but Rashid had Mustard caught at short-leg, John Hastings caught at slip and Paul Coughlin caught at long-on to leave the score at 194-8.
Rashid was replaced after bowling only two overs in Durham's second innings as they advanced to 38-0 after 18.
And it was the part-time off-spin of Adam Lyth which gave Yorkshire the breakthrough as he bowled Keaton Jennings with his fifth ball.