GLAMORGAN face an uphill struggle in their LV= County Championship Division Two clash at Worcestershire, with the hosts racking up 505 runs before reducing the Welsh county to 164 for five at the end of day two.
Moeen Ali converted his first-day century into a whopping 250 as Worcestershire kicked on from their overnight score of 322 for three to declare on 505 for eight.
Glamorgan then made a poor start to their first innings, losing a number of early wickets before Jim Allenby's unbeaten half-century helped stem the flow.
Despite Allenby's efforts, the visitors still ended the second day trailing their opponents by 341 runs and in need of a drastic turnaround if they are to avoid a third defeat of the County Championship season.
The day had not started well for Glamorgan, with Ali cashing in on Worcestershire's dominant start.
He was initially helped by nightwatchman Jack Shantry, who chipped in with a useful 32 runs before he was caught and bowled by Dean Cosker.
That prompted a flurry of wickets as Worcestershire fell from 391 for three to 397 for six, with Mike Reed dismissing Alexei Kervezee for three and Cosker trapping Tom Fell leg before for a duck.
The home side were still in firm control, however, and Ali reached his double-century before he was finally caught by Reed off Cosker's bowling for 250.
Ali had put on 101 for the seventh wicket with Ben Cox and the latter finished unbeaten on 40 as Worcestershire declared on 505 for eight in the afternoon session.
It was an imposing total for Glamorgan to confront, and their response began in a rather feeble fashion as Will Bragg was caught behind by Cox off the bowling of Alan Richardson for five.
He was soon followed into the pavilion by Stewart Walters, who could only manage six runs before he struck a ball from Jack Shantry into the hands of Matthew Pardoe at short mid-wicket.
With Glamorgan teetering on 25 for two, Ben Wright and Marcus North looked to consolidate but their efforts were undone when the former was clean bowled by Shantry for 27.
That made the score 54 for three, and that was soon 71 for four when the hitherto in-form Murray Goodwin was caught behind by Cox off Richardson.
North was the next to go — bowled by Chris Russell — but Allenby and Wallace brought hope to the beleaguered away side by steering them to 164 for five with an unbeaten 56 and 18 respectively.
