Josh Dell scored his second century of the season for Worcestershire Seconds, and Gareth Roderick will begin the final day needing only two runs to complete his hundred in the Second Eleven Championship match with Northamptonshire at Wantage Road.
The duo figured in an unbroken double-century stand for the second wicket as Worcestershire closed on 263-1 from 86 overs.
Dell also hit a hundred against Lancashire Seconds and 82 versus Somerset as part of a fine season in the opening role.
He ended unbeaten on 116 from 249 balls with 15 fours.
Roderick, who played in the opening four LV=Insurance County Championship matches of the campaign, gradually accelerated in making 98 not out.
His half-century came off 129 balls, but Roderick accumulated his next 48 runs from only 71 deliveries.
Charlie Morris took over as captain of the Seconds following Ross Whiteley’s promotion to the senior squad to face Derbyshire at New Road after a series of impressive performances.
He opted to bat after the wash-out of the opening two days and the last EIGHT in total for the Seconds.
Dell’s opening partner was Jacques Banton in his first appearance for the Seconds since suffering concussion against Somerset at Taunton Vale last month.
The pair put on 63 in 21.4 overs before Banton, having made 36 off 69 balls, went for a big hit against spinner Farhaan Khan and was caught at mid-off.
Dell completed his half-century with a cover drive for four off Amrit Basra and collected three boundaries of the same bowler in one over.
Roderick brought up the 100 when he took advantage of a full toss from Khan, which he hit over mid-wicket for six.
Worcestershire went into lunch at 118-1 from 33 overs and the second wicket pair continued to control proceedings when play resumed despite a tight spell from Nathan Buck.
The 100 stand arrived off 191 balls when Roderick pulled Gus Miller for four, and a single on the leg side off Emilio Gay saw him through to his half-century.
The players went off for bad light with Worcestershire on 193-1, but on their return, Dell pushed Gay for two through the covers to go to his hundred.
The double century partnership followed from 379 balls shortly before the close.