BRADENTON, Fla. -- By the time that the Twins depart Spring Training every year, manager Ron Gardenhire usually has his Opening Day lineup pretty much set.

This year, that's not quite the case.

With some injuries still lingering for the Twins -- particularly Justin Morneau's stiff back -- Gardenhire figures he'll have to wait until Monday, the day the club opens the regular season against the Mariners, before he can determine his exact lineup.

"That's not normal, but what are you going to do?" Gardenhire said before the Twin's contest against Pirates on Friday. "You just have to do what you have to do and see where everybody is at. I'll wait and see how everybody does back [in Fort Myers, Fla.,] today."

Of the recent rash of injuries for Minnesota, Morneau's is definitely the most concerning. The first baseman has missed four straight games due to the back stiffness and was unsure whether he would be able to play in the Twins' Spring Training finale on Saturday.

Morneau did say on Friday morning that his back was feeling better. He took part in some drills on the field in Fort Myers, but did not take any swings.

While Morneau was said to be doing "fine" after his workout, the Twins have been cautious with him as they don't want the back issue to linger.

"Today will tell me a little more," Gardenhire said when asked before Friday's game if he was concerned about Morneau's availability for Opening Day. "If he's still feeling the effects where he can't do much, then you start worrying about what we're going to do here roster-wise -- if we'll end up having to do something with him to start the season."

The hope is still that Morneau will be ready to go, and the Twins got some positive news on other injury concerns as well. Shortstop Nick Punto was reported to be doing "fine" after landing awkwardly on a ball in Thursday's contest.

Punto took batting practice back in Fort Myers and he is expected to be back in the lineup Saturday, Gardenhire said.

Delmon Young also returned to the lineup, and played the outfield on Friday against the Pirates after missing a couple contests due to a sore right shoulder.

The Twins set their 25-man roster on Friday by optioning infielder Matt Tolbert to Triple-A Rochester.

Although the exact Opening Day lineup has yet to be determined, Gardenhire provided a few hints as to what it may look like.

The skipper indicated Friday that he might be leaning toward using Michael Cuddyer as the No. 3 hitter in front of Morneau, who is expected to bat cleanup if he can play. Jason Kubel would then likely fill the fifth spot in the order.

Early in spring there had been discussions about possibly having Kubel take the third spot, but Gardenhire said that he likes the idea of having another left-hander behind Morneau.

"My biggest thing is having protection for Morneau more than anything else," Gardenhire said. "So a right-handed pitcher won't come up and throw four non-competitive pitches [to Morneau] and say, 'Let's pitch to the next guy.' I feel like Kubel, another lefty, makes them think a little bit. So we'll see. First, we've got to see who's there."