Somerset 107-7 v Lancashire require a further 188 runs to win
A wonderful afternoon session for Lancashire saw them take seven Somerset wickets to close in on an unlikely first victory of the Championship season.
Somerset were 29-0 off 10 overs at the resumption of play but a devastating spell of bowling from their seam attack, bolstered by the presence of England's James Anderson, left the visitors 107-7 at tea with the 188 runs required for victory looking an impossible task.
Anderson was superb as he removed two former England teammates in the shape of Marcus Trescothick, who edged to McLaren for 36, and wicket keeper Steven Davies, bowled for three.
Kyle Jarvis took the first wicket to fall when he pinned Dean Elgar for eight before Ryan McLaren, who has had an outstanding match, accounted for Tom Abell (0), James Hildreth (43) and James Davey (2) in the last over before tea. Jordan Clark weighed in with the wicket of Peter Trego who edged to Liam Livingstone at first slip for seven.