Yorkshire have begun to make inroads into the Glamorgan batting line up in their LV= County Championship match with the Welsh side at Headingley.

After taking four wickets during the afternoon session on day one, the Tykes had reduced their opponents to 210-4 at tea.

Steven Patterson took two of the wickets, ousting William Bragg for 92 and debutant David Lloyd for an eight-ball duck.

Ryan Sidebottom was the first to strike when he removed Nick James for 38, with Steward Walters dismissed for 42 by Azeem Rafiq.

At the interval, Ben Wright was on 17 with Jim Allenby on ten.