MIAMI -- Marlins third baseman Martin Prado is headed to the disabled list for the third time this year, but this time it is with a strained right knee.
Prado tweaked his knee while making an off-balance throw in the third inning on Monday, but remained in the game until his at-bat in the fourth inning of the Marlins' 6-5 walk-off win in 10 innings against the Phillies at Marlins Park.
Prado has already had two 10-day DL stints due to a right hamstring strain. He opened the season on the DL after injuring his hamstring playing for Venezuela in the World Baseball Classic. And he was on the DL a second time from May 8-June 22 with a similar injury.
"He got it on a ground ball," manager Don Mattingly said.
In the third inning, Jerad Eickhoff rolled a grounder down the line, Prado handled it and threw on the run to first for the out. He struck out in the fourth inning, and was replaced by Dietrich in the fifth inning.
"It was the one that Eickhoff hit down the line," Mattingly said. "He kind of came toward the bag and then threw it. He felt something in there."
Prado's injury comes at a time he is being mentioned in trade discussions. The Marlins, now 42-49, are evaluating trade scenarios for select players. Prado signed a three-year, $40 million contract after the 2016 season. In 37 games, he is batting .250 with two home runs and 12 RBIs.
The Red Sox and Yankees have inquired about Prado, but he hadn't received a great deal of interest from other clubs.
Now that he is headed for the DL for the third time, it diminishes the chances of a deal before the July 31 non-waiver Trade Deadline.
Miguel Rojas will be reinstated from the 60-day disabled list on Tuesday and is expected to at least split time at third base with Derek Dietrich, who replaced Prado on Monday.
Rojas has been on the disabled list since May 9 with a fractured right thumb. He played in a rehab assignment game with Class A Advanced Jupiter on Monday and went 2-for-4. He appeared in eight rehab assignment games with the Hammerheads and two with Double-A Jacksonville.