Bordeaux manager Willy Sagnol was disappointed with his team after losing 1-0 to Bastia at Stade Armand Cesari on Wednesday.
Les Girondins conceded in the 88th minute to Florian Raspentino, and have now dropped down to 17th in the Ligue 1 standings, level on points with their hosts.
"I'm not scared, but I'm very disappointed as we did what we had to do tonight," Sagnol said. "It's very disappointing.
"Against Caen (a 4-1 loss), we showed very little, but tonight the scoreline is even crueller. We had a lot of attacking situations that we should have capitalised on.
"We ended the match with a back-line who were playing in the reserves last season. We're working. We're trying to do our best. We need to beat Guingamp at all costs."
Meanwhile, Bastia boss Ghislain Printant was happy to take all three points, even though he did admit that Raspentino’s late goal had an air of good fortune about it.
"This win does us good," Printant said. "It was imperative that we go after the three points. The first half was complicated, as we were stifled in midfield.Bordeaux moved the ball around well.
"Things got better in the second half; we started winning balls and using them better. We had a few counters that should have seen us open the scoring. But we stuck together and fortune smiled on us. We'll savour these three points."