Article baskets are adapted to support articles within a dishwashing machine. The article baskets can include an article support wall with a plurality of openings defined by an edge extending along a path circumscribing substantially the entire opening. If provided, the edge of each of the openings can be concave in a direction facing the opening along substantially the entire path. In addition, or alternatively, the article basket can further include a divider. The divider can include a portion configured to be selectively inserted into a elongated slot of a sidewall to divide the interior area into a first interior area portion and a second interior area portion. In addition, or alternatively, the divider can include a plurality of article receiving openings with at least one protrusion extending partially across the article receiving opening to divide a plurality of articles.