The striker takes some heart from the performance in the second period against Manchester United but concedes, with typical honesty, that the first was below par.
"In the first half we didn't play as well as we can do and it was important that we came out with a bit of credit," he reflected. "We went out in the second half, played very well and took the game to them.
"We played the way we usually play and they struggled to cope with that a bit, but in the first half we let ourselves down.
"When the second goal went in I'm sure everyone was thinking they would get a few more. We went in at half-time, there were a few words said and it was important that we did ourselves a bit of justice."
It's the Boxing Day trip to Portsmouth next and Robbie hopes, performance wise, that the boys pick up where they left off.
"We worked hard for each other and if we continue to do that I don't see any reason why we can't pick up some points very soon.
"We've now got the Portsmouth game, the lads are looking forward to it and hopefully we can get a good win."
Robbie Keane says a continuation of the work ethic shown in the second half on Sunday will soon see us back in the Premiership points.