A fender for a lawn mower having tire and wheel assemblies that are mounted to a yoke of a swivel caster assembly, whereby the yoke pivots through 360 degrees of rotation, includes an arcuate fender body. The fender body is attached to the yoke by a bracket so that it is rotatably carried by the rotating yoke. As such, the fender body is maintained at an optimal position relative to the mower tire and thereby provides desirable deflection of lawn clippings and other debris from the various operational components provided upon the mower deck. This prevents the premature wear of such operational components, thereby decreasing down time and reducing maintenance costs of the mower.