Wesley So and Awonder Liang remain the only players with perfect scores in the open section of the US Championship after two rounds. Fabiano Caruana stands alone in third place, half a point behind. In the women's tournament, the two lowest-rated participants, Thalia Cervantes and 13-year-old Megan Paragua, share the lead on 2/2. Paragua defeated defending champion Carissa Yip, who blundered in an equal position. | Photo: Lennart Ootes / Saint Louis Chess Club