Both men found the scoresheet in the 2-0 success, Ward with his second goal of the season and Derbyshire on his first start since November.
Along with the vital goals, the pair worked in tandem to give Brighton's defence a torrid evening and boss Redfearn said they led his side from the front.
"I thought the front two were magnificent," Redfearn said. "Their energy and work-rate, they got hold of the ball, ran in behind and looked a real threat for 90 minutes.
"The fact that you have got that energy up front helps you defend from the front. It was a big factor in the game.
"We deserved it, I don't think anybody could doubt that.
"From the first minute we played some good football, we were always on the front foot, I thought that we played at the right tempo, we pressed them at the right times.
"Brighton played their part, they are a good football side, but I thought the difference was the front two."
