MIAMI — Marlins left-hander Jesús Luzardo said Monday he looks forward to rejoining the club soon after tests revealed a mild flexor muscle strain in his throwing elbow. The 26-year-old Luzardo, Miami’s opening day starter, was placed on the injured list Friday. He first experienced discomfort a day earlier. Luzardo, who is 0-2 with a 6.58 ERA in five starts, resumed throwing Monday and is optimistic he dodged a serious injury. “Today was extremely positive.