A sportsball and manufacturing method thereof are provided. The sportsball includes a carcass and a ball cover. The ball cover includes two or more cover panels having connecting sides connected with each other in edge to edge manner to form a plurality of connecting seams. The ball cover is supported and retained by the construction layer of the carcass in a desired roundness after air inflation. At least one the cover panels of the ball cover provides one or more virtual stitching seams molded to form thereon each imitating an actual stitching seam but having no stitching hole and gap. Each of the virtual stitching seams has a virtual seam recess and a plurality of virtual stitching marks along a bottom of the virtual seam recess imitating actual stitching marks of stitching thread like the actual stitching seam after sides of panels being sewn edge to edge together, so as to reduce the number of cover panels of the ball cover and minimize the presence of stitching holes and gaps of the ball cover.