Anthony was forced to cancel a Sunday night show because of a severe sore throat. Spokeswoman Blanca Lasalle says a doctor ordered him to reset his voice for 48 hours.
He's scheduled to give a rain check performance Tuesday at the Puerto Rico Coliseum.
The New York-born salsa singer performed for a packed house Saturday night at the same venue. His wife, actress Jennifer Lopez, joined him on stage for the final number of the night, a duet of "Preciosa."
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