Monica Puig. Pic/AFP

Puerto Rico's Monica Puig earned a ticket to the quarter-finals of the Miami Open tennis tournament, her best performance to date in the Florida tourney, defeating Greek player Maria Sakkari 6-3, 7-5. In her first confrontation with Sakkari on Sunday, the World No.82 Puig showed similar power on the attack to what she had demonstrated in earlier Miami Open matches, in which she -- to general surprise -- had eliminated world No.2 Caroline Wozniacki of Denmark in the second round, reports EFE news agency.