Ross Atkins doesn’t need to sift through the birth certificates to know his team is one of the oldest in baseball.

He also knows full well it could be a factor in the Blue Jays’ non-stop march to the disabled list this season.

At 29.8 years of age, Atkins’ club is the second-oldest squad in baseball this season, behind only the Atlanta Braves’ average of 30.4, a number that is skewed by the off-season signings of rotation relics Bartolo Colon, 43, and R.A. Dickey, 42.

The four important bats missing from Wednesday’s lineup — Kendrys Morales (hamstring), Troy Tulowitzki (hamstring), Russell Martin (shoulder) and Josh Donaldson (calf) — are all on the wrong side of 30.

“There’s certainly some benefits to having a more experienced roster, and there’s some downside to having a more experienced roster,” Atkins said Wednesday, shortly after an MRI on Morales’ left hamstring showed only a strain.

Age clearly isn’t the only reason, but the older you get, the easier you break.

That’s just life.

“I think that probably a more experienced player, an older player could be potentially more prone to it, but that’s only one small factor that could be,” Atkins said.

So what are the others?

That’s exactly what the Blue Jays are trying to figure out.

While some may simply chalk it up to bad luck, Atkins isn’t one of them.

They want concrete answers, which could eventually come from recent investments in sports science and their high performance department.

The soft-tissue injuries — muscle pulls, etc. — are particularly concerning.

“We never talk about bad luck,” Atkins said. “We always think about solutions.

“In the long term, we’re thinking about learning from it and if there’s anything we can do to potentially avoid that in the future. Soft tissue injuries are often talked about and are something we’ll continue to look into to see if we can improve upon avoiding them.”

As the Blue Jays try to stay afloat amidst the litany of injuries to both the lineup and the starting rotation, Atkins isn’t going searching for outside help.

“Because none of (the injuries) are long term, our solutions are going to come from within,” the second-year general manager said. “They heat up our internal phone lines, and some ambulance chasers give us a call every once in a while.”

Despite Martin being placed on the 10-day DL on Monday with a surprising nerve issue in his left shoulder, and Morales coming up lame Tuesday, there has been some good news on the injury front.

Tulowitzki is expected to start a rehab assignment this weekend in Dunedin, while only a Friday bullpen session stands in the way of Aaron Sanchez returning to the mound Sunday in the series finale against the Seattle Mariners.

Donaldson, however, could take a little longer.

Atkins is hoping the former MVP’s absence, now at 27 days and counting, won’t extend into the month of June.

“I’m optimistic,” Atkins said. “I hate to get firm on timelines, but optimistic that we’re definitely not talking about a month.”

Meanwhile, manager John Gibbons is just trying to fill out his lineup card each and every day.

“It’s a little bit extreme, but you look back at how fortunate we were the last couple of years and we were basically injury-free,” Gibbons said. “We might’ve had a couple minor things, short disabled list stints. But you deal with it. That’s part of baseball.”