Yamamoto tossed seven shutout innings while striking out a career-high 13 batters for High-A Jupiter in its 2-0 win over Florida on Wednesday. He gave up two hits and didn't walk a batter in the 89-pitch outing.
Urena said that he "felt something with his arm" during the sixth inning of Wednesday's start in San Francisco. The club will monitor the situation prior to his scheduled start against the Diamondbacks next week, The Miami Herald's Clark Spencer reports.
Marlins manager Don Mattingly relayed Tuesday that Prado (hamstring) has been taking part in fielding, running and hitting drills and could return from the the 10-day disabled list prior to the All-Star break, Joe Frisaro of MLB.com reports. "Martin has been a surprise that he's doing this well this fast," Mattingly said. "I'll say it like that. He's doing really well."