RESULTS: Racquet Club International, St Louis, Missouri, USA
 Amanda Sobhy (USA) bt [Q] Georgina Stoker (ENG) 13-11, 11-7, 11-4
 Alexandra Norman (CAN) bt Carrie Hastings (ENG) 11-7, 11-8, 11-6
 Nicolette Fernandes (GUY) bt Thaisa Serafini (BRA) 9-11, 11-3, 10-12, 11-9, 11-6
 Carolyn Russell (CAN) bt [Q] Karina Heredia Gonzalez (MEX) 11-5, 11-4, 11-3
 Adel Weir-Nunan (RSA) bt Ivonne Diaz (MEX) 11-5, 11-3, 11-2
 Miranda Ranieri (CAN) bt Imelda Salazar Martinez (MEX) 11-4, 11-6, 11-9
[Q] Graciela Lopez Perez (MEX) bt  Genevieve Lessard (CAN) 11-1, 12-10, 11-7
 Alana Miller (CAN) bt [Q] Heidi Mather (AUS) 11-7, 13-11, 11-2
Mexican teenager Graciela Lopez Perez claimed an unexpected place in the quarter-finals of the Women's Racquet Club International after upsetting eighth seed Genevieve Lessard in the first round of the $12,150 WISPA World Tour squash event at The Racquet Club in St Louis, USA.
The 18-year-old qualifier despatched Canadian Lessard 11-1, 12-10, 11-7 and will now face another Canadian, top seed Alana Miller, for a place in the last four.
But it is the event's youngest player who leads US interest in St Louis. Second seed Amanda Sobhy, the 16-year-old world No46 from New York, advanced to the quarter-finals after beating last year's runner-up Georgina Stoker, a qualifier from England, 13-11, 11-7, 11-4.
 Amanda Sobhy (USA) v  Alexandra Norman (CAN)
 Nicolette Fernandes (GUY) v  Carolyn Russell (CAN)
 Miranda Ranieri (CAN) v  Adel Weir-Nunan (RSA)
 Alana Miller (CAN) v [Q] Graciela Lopez Perez (MEX)
– Pauline Courtois leads after first day
World Weightlifting Championships