Kathryn Mercer (Cleveland, OH) won 12-3 over Sarah Wruck (Kansas City, MO) in the Final of the USA Arena National Women's Championship, held May 1 - 6, 2018 in Salt Lake City, Utah. To advance to the championship game, Mercer won 8-3 over Monica Hernandez (San Francisco, CA) in the semifinals of the 2018 USA Arena National Women's Championship in Salt Lake City, Utah; and won 6-3 over Diane Palme (Silicon Valley, CA) in the quarterfinals. of the 2018 USA Arena National Women's Championship in Salt Lake City, Utah;
 
Mercer finished 3-1 in the 0-team qualifying round. . In their opening game, Mercer defeated Melissa Majchrzak (Salt Lake City, UT) 13-3, then won 8-6 against Liana Knott (Dallas-Fort Worth, TX). Mercer went on to lose 7-5 against Katie Feldman (Roseville, CA). Mercer responded with a 9-4 win over Helen Bryce (Cedar Rapids, IA) in their final qualifying round match.
 
. For week of the event schedule, Mercer did not improve upon their best events, remaining at th place on the World Ranking Standings with total points. Mercer ranks th overall on the Year-to-Date rankings with points earned so far this season.