Amanda Serrano to Retire in Final Fight in Puerto Rico

• Amanda Serrano, a seven-weight world champion, will retire after her final fight.
• She will defend her WBA and WBO featherweight titles against Skye Falzon.
• The match is scheduled for January 9 in Puerto Rico at the Coliseo de Puerto Rico.
• Serrano has won multiple world titles in seven different weight divisions.
• The fight will feature three-minute rounds.