Overview

• The American's 47.78 is the second-fastest ever, only 0.18 behind Marita Koch's 47.60 from 1985 and the first sub-48 by a woman in four decades.
• Olympic champion Marileidy Paulino ran 47.98 for silver and Salwa Eid Naser took bronze in 48.19, reinforcing the depth of the final after McLaughlin-Levrone's 48.29 U.S. record in the semis.
• McLaughlin-Levrone said a 400–400 hurdles attempt in 2028 would require schedule adjustments with recovery days, a prospect coaches caution would be demanding over six races in eight days.
• Coach Laurent Meuwly praised her ability to peak with few races and noted scope to push earlier phases, with Thursday's cool, wet conditions leaving potential room for faster times.
• Elsewhere in Tokyo, Noah Lyles won a fourth straight 200 m world title in 19.52, Melissa Jefferson-Wooden completed the 100–200 double in 21.68, and Rai Benjamin kept the 400 m hurdles crown after a successful appeal.