Mayor improved her best to 1.89 m in February in Havana and kept her good form at the 2009 ALBA Games, where she won the high jump gold medal. The 2009 Central American and Caribbean Championships in Athletics in Havana saw her make her senior debut at a top level event and she finished with the bronze medal while St. Lucia's Levern Spencer won the title. She began 2011 with a series of victories in Cuba, including a new best jump of 1.93 m and wins at the Barrientos and Cuban Championship meets. She won the silver medal at the 2010 Ibero-American Championships in Athletics in Spain and then came fourth at the Memorial Primo Nebiolo meet – her first outing on the European professional circuit. She won the Cuba Cup meet in Havana in July and was selected to represent the Americas team at the 2010 IAAF Continental Cup, where she finished in sixth place.