For the second time this month Neil Dexter placed an obstacle in the way of title-chasing Warwickshire as Middlesex made 287 on the opening day of the LV= County Championship clash at Edgbaston.
The Division One leaders had time to make 21 without loss in reply before a burst of heavy rain ended play with 16.5 overs still to bowl.
Dexter's unbeaten 84 in the recent meeting at Uxbridge was only his second half-century of the season and his 101 took him to three figures in the championship for the first time in 16 months.
However, Warwickshire's closest rivals Sussex were finding it tough too as Somerset skipper Marcus Trescothick confirmed his return to form after ankle surgery with an unbeaten 89 on the opening day at Taunton.
The former England opener helped his side to 175 for three off 51 overs, having won the toss, before heavy rain ended play at shortly after 3pm.
Trescothick shared stands of 61 with Chris Jones (26) and 56 with James Hildreth (23), while Monty Panesar claimed two for 44 from 17 overs.
At Chester-le-Street, Worcestershire's woes continued as the Division One basement-dwellers were bowled out for just 120, with Durham then reaching 215 for nine in reply before the close.
Matthew Pardoe made 36 for Worcestershire and Ben Scott 28, but the innings belonged to Durham paceman Chris Rushworth who claimed a career-best five for 44, while Graham Onions returned figures of three for 27.
Ben Stokes then had 78 to anchor Durham's reply.
- Neil Dexter