AN unbeaten 45 from Graham Clark held up Glamorgan on a Chester-le-Street pitch showing signs of variable bounce as Durham reached 150 for three, trailing by 145, at tea.

Marchant de Lange had fellow South African Stephen Cook caught behind off a tentative prod which confirmed the Test opener's lack of form.

In his seventh and final championship game for Durham Cook is averaging 19.92 after falling for 14.

Jack Burnham, returning after a broken thumb, contributed 25 to a stand of 41 with Cameron Steel before he edged Lukas Carey on to the chest of wicketkeeper Tom Cullen and the ball rebounded into the hands of Colin Ingram at first slip.

When de Lange returned for a second spell Steel upper cut his first ball for four, drove the second to the cover boundary and watched the fourth balloon over the keeper for four byes.

But in attempting a second upper cut he edged a poor ball to Cullen to depart for 32. Clark cut and pulled strongly, while Paul Collingwood settled in quietly to reach 21 at tea.