The Knights produced a battling display against Ealing Trailfinders on Saturday, but left unrewarded for their efforts after a 33-24 defeat.
Doncaster fought back from two tries down to lead at the interval 21-14, however couldn't stay ahead as the home side powered back in the second half.
Backs Coach Paul Cooke was pleased though with what he saw from the players on the pitch.
“The efforts of the boys were phenomenal, to go 14-0 down into the wind we were facing in the first half and then to go up 21-14 took massive guts and effort as well as some really smart football as well.
To be disappointed that we’ve come away with nothing and even more disappointed that we have not won the game is testament to where we are at. It shows how far we’ve come that we are not pleased how the result has gone."
Cookie believes the match swayed in the favour of the Championship second placed team after the interval.
"The start to the second half has cost us ultimately to get anything from the game and we will learn from that, but to be in the game and to be within a bonus point at the end of the game and pushing for that bonus point and even pushing to win the game against a team second in the table just shows to me how far this squad has come over the last month."
The Knights face Nottingham at Castle Park this Saturday, with the Backs Coach able to see plenty of positives to take from the defeat to Ealing.
"There are plenty of positives to take into the game against Nottingham, but that doesn’t mean we are going to win the game. We will prepare as well as we did last week and the week before and put in the right preparation and the right amount of work and be smart with what we do and come with the right attitude and desire to win a game as we have done against Ealing. Overall we will go away from the Ealing match with more positives, but we are still disappointed to lose."