United impressed at the back, event after Brazilian star Rafael was sent off in the second half.
“I think they were particularly good,” Ferguson told Sky Sports about his defenders.
“It could be a really thrilling end to the season. Tottenham are not out of it.
“It’s about winning games and keeping your nerve and today, defensively, we kept our nerve.”
“I don’t need to discuss that, you can see for yourself,” said Ferguson. “I don’t need to discuss the referee.”
Rafael was handed his second yellow card for a foul on Benoit Assou-Ekotto in the second half of the goalless draw on Sunday.
“I don’t need to discuss that, you can see for yourself,” said Ferguson. “I don’t need to discuss the referee.”
