All-rounders Dan Douthwaite and Andrew Salter put on a stand of 163 for the seventh wicket for Glamorgan to defy Durham on day three of their LV= Insurance County Championship Division Two clash at Emirates Riverside.
Douthwaite eventually fell for a County Championship career-best 96, but Salter remains unbeaten on 82 with Glamorgan 333/7 and trailing by 73 heading into the final day.
"I think at the start of the day it was our goal to take it as deep as we could without looking too far ahead," said Douthwaite.
"We said if we were coming back on Wednesday morning it would be big for us and provide momentum to take into our remaining games.
"We're happy that we showed that fight and that grit and determination that we were missing against Essex and in our first innings here.
"Obviously for me it was very bittersweet. It would have been nice to get my first hundred for the club. The dismissal is still very raw for me, but I was happy that we can do, and what we can offer for the rest of the season. I was stuck on 96 for a while, and the shot I played is usually one of my strongest against spin.
"I would argue that it was the right shot, but it doesn't take a genius to work out the execution wasn't quite there. I probably should have kicked it away, but I live by the sword and die by the sword."