Jermain Defoe's magnificent strike after 34 minutes was good enough for a 1-0 win as we completed August unbeaten after four games.
Ledley King and Noureddine Naybet were outstanding in another excellent defensive as the visitors were restricted to just one serious chance - Emile Heskey heading over from close range in injury time.
"I am pleased with our fighting spirit because when it was difficult, we stuck together," said a delighted Jacques afterwards. "That was very important.
"Birmingham are a good team with good players. I thought Jesper Gronkjaer was a threat down the right and their strikers were very impressive.
"I know my team is tired but we played together. We have a young team with new players and to have that fighting spirit is good news for the future."
Jacques Santini was delighted with our fighting spirit as we toppled Birmingham City to step up to third place in the Premiership on Saturday.