The visitors climbed to second place in the Premier League 2 Division 1 table after winning 1-0 at the American Express Elite Performance Centre to halt Albion's run of five games without defeat, but Rusk's men were denied an equaliser by some fine saves from Foxes’ keeper Viktor Johansson in the second half.
Rusk said: “I thought a draw would have been a fair result. With the wind and rain, conditions were difficult and I felt we didn’t cause Leicester enough problems in the first half.
"The goal came from a mistake which can happen to anyone but we created a couple of good opportunities in the second half and probably deserved a draw in the end.
"It just didn’t fall for us and their keeper made a couple of really good saves. Fair play to Leicester, they are a good side who made it difficult for us.
“We changed our system and played with three central defenders to suit the personnel we had and I thought it worked well. It was good for Solly March to get 45 minutes under his belt but it was a game of few clear-cut chances and the conditions had a lot to do with that."
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