The Chicago Open is currently underway at the Westin Chicago North Shore Hotel from May 21-25. Young stars GM Sam Sevian and IM Luke Harmon-Velotti lead after four rounds. Over 20 other Grandmasters are playing, including top seed Lazaro Bruzon Batista (Cuba) and GM Gata Kamsky. Follow standings and live games on the official website,  http://chessevents.com/chicagoopen/