Division One strugglers Lancashire and Hampshire look destined to play out a high-scoring County Championship draw.
Despite centuries from Alex Davies (115) and Dane Vilas (134), the hosts could not overtake Hampshire’s first innings total of 451, finishing with 411.
The visitors then reached stumps on 66-2 second time around – 106 runs ahead at Old Trafford.
The Red Rose county, who have found runs hard to come by this summer, put in a solid performance on a flat pitch as the batsmen continued to dominate.
Then, a wicket apiece for Tom Bailey and Graham Onions kept the visitors in check with time running out for them to build on their slender lead and force a win.
Jimmy Adams was trapped on the crease by Onions as he fell lbw for four. Following on from his century on the opening day, Hampshire captain James Vince was then strangled down the leg-side off Bailey for 18.
Lancashire began the day on 140-3, still 311 runs in arrears. But Davies and Vilas put immediate pressure on the Hampshire bowlers.
Vilas reached a 114-ball half-century with six fours. The pair kept the scoreboard ticking over and brought up their 100 partnership.
Davies notched his maiden first-class ton of the summer and the fourth of his career off 176 balls, but he was only able add 15 more before needlessly gifting Rilee Rossouw a catch at gully off Ian Holland (208-4).
In the opening over after lunch, Vilas reached his fourth century for Lancashire off 169 balls – that after he’d hit two consecutive boundaries and 16 in all.
The fifth wicket pair looked to bat their side into the lead, but Vilas was trapped lbw by Kyle Abbott having faced 216 balls and hit 20 fours.
Clark, who shared 112 with Vilas, was left to marshall the tail with Lancashire still 131 runs behind.
But Lancashire, in the search for quick runs with the follow-on now out of the equation, lost their final three wickets for 17 runs as Stephen Parry and Bailey both fell for six. Sandwiched in between, Clark fell was run out by Vince.
South African seamer Abbott was the pick of the Hampshire bowlers with figures of 3-89.