|LV= County Championship Division One, Trent Bridge|
|Close, day one: Somerset 168 v Nottinghamshire 208-1|
|Somerset 0 pts, Notts 4 pts|
An opening partnership of 203 between Phil Jaques and Steven Mullaney put Nottinghamshire in complete control after Somerset were bowled out cheaply.
Jaques (111 not out) and Mullaney (91) scored freely as Notts reached 208-1 at the end of day one at Trent Bridge.
Earlier, only veteran captain Marcus Trescothick (87) showed any real resistance for Somerset as the visitors were bowled out for 168.
Harry Gurney (3-44) and Andre Adams (3-47) were the pick of the bowlers.
Having elected to bat first, Somerset's top order crumbled, losing wickets at regular intervals and unable to establish partnerships.
Nottinghamshire will look to press home their advantage on Monday and bat their Division One rivals out of the game.
BBC Radio Nottingham's Dave Bracegirdle:
"If Notts hadn't been perceived as title contenders before, then surely they must now be a force to be reckoned with.
"The classic 'Day of Two Halves' featured a ruthless display from the seam quartet, followed by a double-century stand for the first wicket.
"Somerset are still unbeaten and can't be discounted yet but Nottinghamshire fans will have every reason to enjoy this performance, having suffered so much pain at the hands of the Cidermen in recent times."