Last year's champions could repeat in Girl's singles at World Junior Championships

There were a couple of upsets in the girl's singles semi-finals Friday at the 26th International Racquetball Federation (IRF) World Junior Racquetball Championships in Cali, Colombia.

The Girl's U18 final is an all-Mexico affair, as top seed and defending U18 champion, Lucia Gonzalez defeated American Lexi York, 15-10, 15-4, in one semi-final, and 3rd seed Alexandra Herrera upset 2nd seed Natalia Mendez of Bolivia, 15-6, 15-3, in the other.

Last year's U16, Diana Aguilar of Mexico also has a chance to defend the title, as she is back in the final this year after defeating Hawira Rojas of Bolivia, 15-9, 15-4, in the semi-finals.

Aguilar wasn't the top seed in the elimination round, though, as she lost in the preliminary round to American Jordan Cooperrider. However, Aguilar won't have a second chance at Cooperrider, because Melania Sauma of Costa Rica beat the American, 15-5, 15-6, in the other semi-final.

Finally, the 2013 U14 champion - Gabriela Martinez of Guatemala - also has a chance to win it in 2014. Martinez defeated Ana Laura Flores of Mexico, 15-4, 15-7, in the semi-finals.

But Martinez's opponent in the final won't be top seed Mexican Monserrat Mejia, as she was defeated handily by Bolivian Wanda Carvajal, 15-7, 15-5, in the other semi-final.

The finals are Saturday, and there will be live streaming from 10 AM CDT from Cali via the IRF Network for free.

26th IRF World Junior Racquetball Championships
Cali, Colombia

Girl's U18 Singles

Semi-finals - Friday

Lucia Gonzalez (Mexico) d. Lexi York (USA), 15-10, 15-4
Alexandra Herrera (Mexico) d. Natalia Mendez (Bolivia), 15-6, 15-3

Final - Saturday

Lucia Gonzalez (Mexico) v. Alexandra Herrera (Mexico) - Noon

Girl's U16 Singles

Semi-finals - Friday

Melania Sauma (Costa Rica) v. Jordan Cooperrider (USA), 15-5, 15-6
Diana Aguilar (Mexico) d. Hawira Rojas (Bolivia), 15-9, 15-4

Final - Saturday

Melania Sauma (Costa Rica) v. Diana Aguilar (Mexico) - 11 AM

Girl's U14 Singles

Semi-finals - Friday

Wanda Carvajal (Bolivia) d. Monserrat Mejia (Mexico), 15-7, 15-5
Gabriela Martinez (Guatemala) d. Ana Laura Flores (Mexico), 15-4, 15-7

Final - Saturday

Gabriela Martinez (Guatemala) v. Wanda Carvajal (Bolivia) - 10 AM

Girl's U18 Doubles

Final - Saturday

Ximena Gonzalez & Alexandra Herrera (Mexico) v. Gabriela Martinez & Maria Renee Rodriguez (Guatemala) - 3 PM

Girl's U16 Doubles

Final - Saturday

Diana Aguilar & Ana Sofia Gasca (Mexico) v. Melania Sauma & Sofia Soley (Costa Rica) - 2 PM

Girl's U14 Doubles

Final - Saturday

Monserrat Mejia & Andrea Ramirez (Mexico) v. Wanda Carvajal & Adriana Homsi (Bolivia) - 1 PM

Follow the bouncing ball....