The decline in Michael Vaughan's form hardly compares with the decline in the polar icecap but it understandably dispirits the player, and he is equally unimpressed with rumours of a move.

Having avoided a fifth duck in ten innings with a sumptuous off-driven four, Vaughan, flashing furiously, survived a chance to third slip two balls later. But, as he resumed on 19 after lunch, an elderly lady said “I've heard you're going to Warwickshire and I'm not happy”.

The batsman himself was no happier. Without addition, he fell to fine bowling from Jason Lewry and said: “I'm not sure where all the speculation's coming from but I'm getting fed up with it. I'm just looking to find some form with Yorkshire”. His colleagues fared little better against Lewry, undoing Adil Rashid's good work with the ball in the morning by surrendering six other wickets to the close.

Lewry's 12-over new-ball spell, broken by lunch and a 2½-hour stoppage for rain, brought him three for 27 to balance Rashid's three strikes as Sussex's last six wickets fell in 13 overs during the morning. Gaining appreciable turn at the Peasholm Park End, Rashid, the leg spinner, extended his recent excellent run to 35 wickets at 24.17 in his last seven championship games.

He removed Andrew Hodd, for 81, and Robin Martin-Jenkins with successive balls. After Carl Hopkinson fell leg-before to Rana Naved-ul-Hasan trying to turn a full ball to leg, he ended Mohammad Sami's first innings for Sussex when the batsman was pinned in front for nine, sweeping.

A bizarre dismissal undid Corey Collymore who, stepping out to whip Rashid through mid-wicket, found a leading edge that rebounded off Adam Lyth's knee at silly point and hit the stumps, with the affronted batsman still out of his ground. Lewry also failed to hold ground when Naved, a former colleague, rattled his stumps, with the last man some way towards square leg.

Given the ball, Lewry was a different prospect as always. Having disposed of Andrew Gale with outswing, he posed repeated problems for Vaughan, whose dip in form is most tellingly traced back to his Test century against India on July 30, 2007. Since then, only 912 first-class runs have followed at 23.38.

Inswing from Collymore unseated Anthony McGrath, seven overs after Vaughan had succumbed, and Lewry also had Lyth for nine. Tim Bresnan, dropped at slip in Ollie Rayner's first over, made 19 until he played on to Martin-Jenkins's fourth ball and Rayner produced a beauty that bounced and turned to find the left-handed Jacques Rudolph's edge for 41. When Martin-Jenkins had Rashid taken at slip, three more men had gone in the final 45 minutes.

Scoreboard

Sussex: First Innings (overnight 203-4)
A J Hodd lbw b Rashid 81
C D Hopkinson lbw b Naved 15
R S C Martin-Jenkins c Rudolph b Rashid 0
O P Rayner not out 15
Mohammad Sami lbw b Rashid 9
C D Collymore run out 3
J D Lewry b Naved 1
Extras (lb 2, nb 8) 10
Total (82.1 overs) 265

Fall of wickets: 1-49, 2-150, 3-195, 4-202, 5-227, 6-227, 7-241, 8-258, 9-264.

Bowling: Hoggard 12-3-51-1; Kruis 16-5-40-0; Naved 16.1-2-55-2; Patterson 15-0-46-2; Rashid 19-0-56-4; McGrath 4-1-15-0.

Yorkshire: First Innings
A W Gale lbw b Lewry 3
M P Vaughan c Hodd b Lewry 19
*A McGrath lbw b Collymore 16
J A Rudolph c Hodd b Rayner 41
A Lyth c Hodd b Lewry 9
T T Bresnan b Martin-Jenkins 19
G L Brophy not out 11
A U Rashid c Rayner b Martin-Jenkins 1
Naved-ul-Hasan not out 9
Extras (b 4, lb 1) 5
Total (7 wkts, 47 overs) 133

S A Patterson, M J Hoggard, G J Kruis to bat.

Fall of wickets: 1-4, 2-27, 3-47, 4-60, 5-106, 6-114, 7-121.

Bowling: Lewry 12-4-27-3; Sami 9-1-30-0; Collymore 9-2-32-1; Rayner 10-2-28-1; Martin-Jenkins 7-5-11-2.

Umpires: S A Garratt and J W Lloyds.