|LV= County Championship Division One, Taunton (day two)|
|Yorkshire 438: Leaning 123, Bresnan 100 not out, Trego 4-74|
|Somerset 309-4: Hildreth 81, Abell 62|
|Yorkshire lead by 129 runs|
|Yorkshire 6 pts, Somerset 5 pts|
James Hildreth smashed 82 from 61 deliveries to wrestle back momentum for Somerset after Tim Bresnan's century.
The visitors began on 345-8, reaching 438 thanks to a 92-run partnership for the ninth wicket between Bresnan (100 not out) and Steven Patterson (42).
Marcus Trescothick (56), Tom Abell (62) and Johann Myburgh (41) all got starts before Patterson (2-28) struck back.
Hildreth shared a 129-run partnership with Tom Cooper (55 not out) to help the hosts reach 309-4 at stumps.
|Yorkshire aiming to break away side curse|
|The away team has not won in the last nine matches between Somerset and Yorkshire, dating back to 2009.|
Bresnan and Patterson scored freely, moving along at five runs an over to allow Bresnan to complete his first Championship century for eight years from 136 balls, before Peter Trego (4-74) had Patterson caught behind off a short ball.
Jack Brooks survived just four balls before Craig Overton (3-74) had him caught behind to leave Bresnan stranded.
Somerset began their response promisingly, Trescothick reaching his fifty off just 59 balls before he edged Patterson behind to Jonny Bairstow.
Abell and Myburgh continued to accumulate steadily until they both fell in quick succession. Abell was caught at slip by Bresnan from Adil Rashid's bowling before Patterson pinned Myburgh lbw in the next over.
Hildreth arrived at the crease with the score at 165-3 and his aggressive intent swung momentum the way of the home side.
He reached his fifty from just 30 deliveries including back-to-back sixes from Rashid (2-77), but the leg spinner dismissed him caught and bowled to end his explosive innings.
Nightwatchman Alfonso Thomas survived until the close of play alongside Cooper to leave Somerset trailing by 129 runs with six wickets in hand.
Somerset batsman Tom Abell:
"It's nice to get a few partnerships going at the top of the order. Personally, I was really helped by the way others played around me.
"It gave me the chance to establish myself and I found it a really good challenge against some really good bowlers.
"We are right in the game and pretty happy with the position in which we find ourselves. We've still got six wickets left and, if we can establish some partnerships, pressure can do some funny things."
Yorkshire captain Andrew Gale:
"Fair play to Somerset, they some played some really positive, attacking cricket and put us on the back foot from the word go. We didn't bowl like champions and that was disappointing.
"But tomorrow is another day. We will turn up with a different mindset and try to roll them over.
"Bresnan played beautifully and Patterson chipped in too. To get up to 430-odd was a really good effort. But we allowed them to score all around the wicket."