Durham 311 all out (84.3 overs) Ben Stokes 82, Keegan Petersen 78; Michael Hogan 4-67.
Glamorgan 31/2 (9 overs) Marnus Labuschagne 15*; Matthew Potts 2-18.
Newly appointed England red-ball captain continued his strong form in the format with a patient 82 for his county when they were put in to bat at a cold Chester-le-Street.
Stokes innings showed all his best attributes in abundance showing patience against seamers Michael Hogan and Michael Neser who bowled accurately throughout the day, and his power was shown launching Labuschagne’s legspinners into the stand twice.
Glamorgan captain David Lloyd’s decision to bowl first looked a good one when in-form Sean Dickson edged to slip for just 5, then England opener Alex Lees edging onto his stumps for 44.
Durham then stuttered slightly when captain Scott Borthwick (17) was caught at mid on and David Bedingham was trapped in front for just 11.
Keegan Petersen and Stokes rebuilt well taking the score past 200. Classy Petersen looked in no danger then suddenly edged a length ball from Lloyd to slip to depart for 78.
Stokes however kept batting and made sure of a reasonable total with valiant support from Ned Eckersley (21) and Ben Raine (31).
Hogan eventually cleaned up the Durham tail for 311, claiming the last three wickets which left Glamorgan with a tricky 9 overs to get through to close.
Matty Potts took advantage of this tricky period dismissing Andrew Salter and nightwatchman Andy Gorvin, bringing Aussie superstar Labuschagne to the middle to see Glamorgan to close.