Jack Ziebell is back running and won’t let a calf injury stop him from putting his hand up for Round 1.

The 28-year-old is coming off a career-best season, but like last pre-season, has been hobbled by pesky calf troubles. However he refuses to concede he’s in doubt for the season-opener against St Kilda on March 22.

“I’m not (in doubt for Round 1), but it doesn’t leave any room for another setback, which I don’t expect there to be,” Ziebell told foxsports.com.au.

“I had a calf in the off-season but I was back in full training before Christmas and did quite a bit over the break. I came back after Christmas and did a bit with the main group and was training really well and was feeling fit.

“I had a bit of a setback the second week back after Christmas, just a tiny little thing, nothing major at all. We backed off for two weeks and now we’re back into training again.”

He’ll miss the Marsh Series game against the Dogs this Friday night, instead eyeing a return in against the Swans.

“I’ll miss the first Marsh just so I can get my training loads back up and then play the second one down in Hobart, have the week off and be ready to go for Round 1,” he said.