Head of England i nternational player development Joe Lydon admitted his Saxons side were made to pay for their indiscipline as they drew 16-16 with Scotland A at Scotstoun Stadium.
The Saxons had two players sin-binned as scrum-half Dan Robson and replacement number 10 Henry Slade were both shown red cards by eferee Laurent Cardona.
"We knew it was going to be a tough game. They are always are with that great rivalry when we face a Scotland team," Lydon said.
"Disappointed as the players are not to have got a win, they have learned a lot about how to play international football - or in some cases not.
"To lose two players was crucial - little bits of ill-discipline at key moments in the game that could have cost us a lot more."
Scotland A coach Shade Munro said: "To get a result out of that game, given that we seemed to have slipped permanently behind with 10 minutes to go, was pretty satisfactory.
"Given we've only had one week's training, that was a good result for us."