A multiblade lawn mower including a mower deck having a plurality of cutting blades rotatably disposed therein. A first baffle is positioned within the mower deck between the cutting blades and a front wall of the mower deck and extends substantially continuously between the sides of the mower deck. A second baffle is positioned in the mower deck rearwardly of the cutting blades. The first and second baffles each include a plurality of arcuate baffle portions which define at least one open throat portion therebetween. The first baffle includes at least first, second and third arcuate portions. A third baffle is positioned within the mower deck and extends from adjacent a discharge opening of the mower deck into a circular path defined by peripheral ends of a cutting blade adjacent the discharge opening.