Brentford's surprise defeat to Stoke City means Leeds United cannot be caught at the top of the Championship.
Leeds United have won the Championship title as a result of Brentford's 1-0 loss to Stoke City on Saturday.
Marcelo Bielsa's side saw promotion to the Premier League confirmed on Friday after West Brom were beaten 2-1 by Huddersfield Town.
Victory for Brentford would have lifted them above the Baggies into second place and closed the gap to Leeds to three points.
However, a first-half goal from Lee Gregory secured a win for Stoke at the bet365 Stadium, guaranteeing the Potters' survival and crowning Leeds as champions a day before they face Derby County in their penultimate game of the season.
The result also means Brentford stay third, a point behind West Brom, with just one game to go.