GRINNELL, Iowa - For the second time in his career, Junior David Potter has been named Midwest Conference Track & Field Athlete of the Week, as announced by the conference office on Tuesday.  Potter turned in the top 5000m time in the MWC on Saturday at the UW-Whitewater Warhawk Invite, as he finished third overall in a time of 15:18.03.  He dropped six seconds from his lifetime best performance and now ranks fourth all-time in school history.