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Daniel Murphy receives PRP injection in balky quad

MIAMI -- New York Mets infielder Daniel Murphy received a platelet-rich-plasma injection during a visit with team doctors on Thursday in New York City, leaving him unavailable for Friday's series opener against the Miami Marlins.

Murphy departed Wednesday's game after three innings with what subsequently was diagnosed as a "mild" left quadriceps strain. He officially is day-to-day.

Manager Terry Collins does not expect Murphy in the lineup on Saturday, either.

With Lucas Duda (herniated disk) on the disabled list at least through Monday and Michael Cuddyer (wrist) and Murphy unavailable, Kelly Johnson starts at first base on Friday.

"I think what I got done yesterday is maybe going to take a day or two to take effect, is what the doctor told me," said Murphy, who missed 25 days in June with a strained left quad. "It doesn't feel terrible, so I'm still encouraged."

Murphy said the current strain is "not as severe" as the first-half injury that required the nearly four-week absence.