Marlins notes: Dan Jennings confident in Henderson Alvarez’s arm

Henderson Alvarez is starting Friday night, his second since returning from the disabled list.

Steve Mitchell/Steve Mitchell-USA TODAY Sports

MIAMI — Miami Marlins manager Dan Jennings addressed a report by CBS Sports’ Jon Heyman concerning Henderson Alvarez when asked about it during his pregame media session on Friday afternoon.

In the report, Heyman wrote Alvarez has been pitching with a 90 percent tear of his UCL.

Alvarez, whom the Marlins acquired in the 2012 blockbuster trade with the Toronto Blue Jays, entered Friday night’s start with a 17-16 record and 3.17 ERA in 50 starts for the Marlins. He tossed a no-hitter on Closing Day 2013. Alvarez didn’t make his Miami debut until July of that season because of right shoulder inflammation.

Last season, he made the All-Star team after posting a 6-4 record and 2.63 ERA in 19 first-half starts with three shutouts. He did have a brief DL stint in late July-early August with a similar injury.

In his return to the mound on Sunday, the 25-year-old righty surrendered six runs on nine hits with two strikeouts and two walks over 5 1/3 innings.

"He had last year a 15-day DL stint with inflammation in the shoulder and he came off and had a tremendous year and was an All-Star," Jennings said. "This year he has a 15-day DL stint comes off exactly the day he needs to. When we made the trade, there were medical exchanges and all, so we were good with what we had. These guys that have pitched in the big leagues a while, there are no pristine arms. There’s wear and tear on all of them. Henderson’s a competitor and he’ll keep running out there. I’m not sure where the information came from. I, too, heard the report, but at the same time I’m not medical staff. We’ll put that in the hands of our medical people."

Asked whether he would put a guy with a 90 percent tear on the mound, Jennings — with a laugh — replied, "I just want to win. Whatever it takes."

INJURY UPDATES

Jeff Mathis, on the DL since April 13 with a right hand fracture, may begin a rehab assignment over the weekend. Jhonatan Solano has been the backup to J.T. Realmuto since the Marlins designated Jarrod Saltalamacchia for assignment.

"Mathis is really doing great," Jennings said. "He threw to bases today. He’s swinging the bat and I think he’s really close to beginning his rehab."

Right-hander Jarred Cosart, who went on the DL (retroactive May 14) with vertigo, played catch on Friday. He is still a few days away from running again.

"We’ll make a plan for him in terms of what we do to build him back up," Jennings said.

Utility player Don Kelly, who broke his right fourth finger in the same game as Mathis, is a bit behind the other two in terms of recovery.

"Still trying to get through with the finger," Jennings said. "He’ll go out on a rehab as well. Get some at-bats, get back to game speed. A little more time there."

You can follow Christina De Nicola on Twitter @CDeNicola13 or email her at cdenicola13@gmail.com.