Nottingham Forest took a 1-0 lead at halftime after Johnson scored in the 14th minute, assisted by Keylor Navas.
In the second half, Nottingham Forest substituted Serge Aurier, Jack Colback, and Sam Surridge for Wood, Danilo, and Mangala.
Summerville, Weston McKennie, Junior Firpo, and Rutter were brought on as substitutes for Luis Sinisterra, Marc Roca, Struijk, and Bamford.
Nottingham Forest held on for a 1-0 victory to move above Leicester City to 13th place in the Premier League table with 24 points, while Leeds United dropped to 17th place with 18 points.
Nottingham Forest vs Leeds United Team News
Nottingham Forest took the lead in the 13th minute through Johnson, who expertly volleyed into the bottom corner from the edge of the penalty box after Leeds failed to deal with a deep free kick into their own penalty box.
In the 23rd minute, a mix-up inside the home team’s area almost gave Leeds the chance to level, but Keylor Navas, making his debut in goal for Cooper’s side, was able to gather the ball after it had hit his teammate Willy Boly, who then required treatment for a head injury.
Leeds had a golden chance to equalize in the 31st minute when Willy Gnonto found Luis Sinisterra inside the Forest box, but the striker shot wide.
Nottingham Forest beat Leeds United thanks to a cracker from Johnson
Gnonto was causing havoc down the Leeds left, with the visitors feeding him at every opportunity, and the Whites were the team on the front foot heading into the break, with Navas called into action again to keep out a header from Ayling, who was dangerous inside the Forest box.
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After a mistake by Neco Williams, Gnonto had a chance of his own in the 43rd minute, but Navas was on hand to make a smart save, before a poor touch from Bamford prevented the striker from scoring in the closing stages of the first half at the City Ground.
Williams had the first chance of the second half, working a yard inside the Leeds box before attempting to hit the far corner, but his effort was just too high.
