Saracens coach Alex Sanderson believes his team should have beat Northampton Saints on Saturday and that the defeat was due to the Men in Black's indiscipline.

Sarries lost a tight contest 20-16 at Franklin's Gardens although Sanderson's men will get the chance to avenge their defeat when they travel up the M1 to play Saints again in the semi-finals.

“I thought we did enough to win it”, Sanderson told reporters after the match.

“Coming down to Franklin’s Garden’s and putting yourself in a great position to win the game is no mean feat, but then we lost it and gave it to them through a lack of execution and ill-discipline.

“As I said to the lads, we can hold our heads up for effort and all the heart we put into it today.

"It’s a learning experience for them. In this competition when the stakes are raised, every mistake, every bit of ill-discipline carries a bigger ramification and a bigger consequence and we’ll learn from that."

Sarries will play Saints in at Franklin's Gardens in the competition's last four on the weekend of March 8.