HATTIESBURG, Miss. — Don’t go sleeping on this LSU baseball team.

You’ll probably miss some high drama, maybe something historic, no matter the urge to nod off early.

It is almost getting monotonous by now — another night, some more early struggles another unlikely comeback dialed up just in the nick of time for the Rally Cap  Tigers.

By the bottom of 10th against Southern Miss late Saturday night, it almost seemed like a matter of who, not if, would make it happen.

So LSU’s Josh Stevenson  scored well ahead of the throw on freshman Josh Pearson’s one-out infield high-chopper for a 7-6 victory over the top-seeded Eagles for a second straight huge comeback and another rush to celebrate.

“We have this saying that there’s no clock in baseball,” LSU coach Jay Johnson said. “No team has probably exhibited that better than our team here in the last two days. I’m proud of the competitive fight.”

The ending — LSU’s first-ever  NCAA tournament walk-off on an opponent’s home field — came after the Tigers loaded the bases with no outs.

Child’s play.

It never happens if LSU, which floundered offensively most of the night against as good a pitcher as Johnson has seen this year, hadn’t scored four runs in the bottom of ninth — three of them with two outs — to force the extra inning.

That’s where the heavy lifting came in.

And it came after the Tigers appeared to have frittered away their best opportunity when they left the bases loaded in the eighth, where they did the 10-run rally Friday against Kennesaw.

So when Dylan Crews hit a towering solo home run in between the first two outs of the ninth, it looked like mere window dressing.

But Josh Pearson singled — still some hope — and Cade Doughty followed with a 2-run homer.

“I guess that’s when I started thinking it was possible this time,” Crews said.

Yes, after two straight nights of this, he needs only a  short memory to  compare rally tipping points.

Or comebacks. He had the go-ahead double in Friday’s miracle and called it the “highlight of my career so far.”

“This one is pretty close, my two best,” he said after Saturday.

But after the two ninth-inning home runs, the Tigers still needed one more run, needed Tre’ Morgan to get hit by a pitch, an LSU speciality, with pinch runner Drew Bianco then stealing second base with Jordan Thompson at the plate.

“Jordan came up, I called down to the bullpen to make sure (relief closer) Paul Gervase was ready to go because the game was going to be tied,” Johnson said.

Thompson took a look over at the dugout — “Everyone cheering me on … it was crazy” — before stroking a single up the middle that easily scored Bianco and set up the seeming formality of the ninth-inning knockout punch.

“We have really good players throughout the lineup, so it can sometimes win on talent,” Johnson said. “When you get to the NCAA Tournament you can’t win on talent, it’s about the play and what’s inside of you.”

There something magical running through those purple and gold blood veins.

LSU is now only the second team ever to start a regional 2-0 after trailing both games after seven innings.

It gives the Tigers a pass to the championship round, where they’ll play the winner of Sunday’s 1 p.m. elimination game between Southern Miss and Kennesaw State, the latter the victim of LSU’s 10-run eighth rally Friday night.

LSU needs only one more win to sew up the regional, with two chances to get it against the survivor. A loss tonight would give the Tigers a mulligan on Monday.

“On paper it’s huge,”Johnson said. “In these

tournaments you always look at how you need to do it and this certainly helps. But it’s not over. We just need to get reset. It allows us to stay in our routine that we’ve been in since we’ve been here.”

Who pitches for LSU Sunday night is anybody’s guess — Johnson won’t announce it until 90 minutes before the game — but the Tigers will have plenty of options and their deep bullpen fairly rested for the chore.

LSU got a run in the first on  Morgan’s RBI single, but left the bases loaded with a chance to do more damage.

The Tigers added another in the second on McManus’ 10th home run of the season after which  Southern Miss starter Hurston Waltrep settled in to dominate before departing with two outs in the seventh.

Waltrep struck out 11, a Southern Miss tournament record, including six in row before Dylan Crews’ 2-out double chased him in the seventh.

Dalton Rogers came on to strike out the dangerous Jacob Berry and strand Crews.

“We faced Chase Dollander from Tennessee last Friday night,” Johnson said in comparing Waltrep. “Those two guys are easily the best two pitchers we’ve seen the entire year. I’m glad we got him out of the game at 119 pitches.”

LSU starter Ty Floyd threw a perfect first inning before giving up a 2-run homer to Will McGillis in the second.

Floyd lasted six innings, giving up four runs on six hits while striking out seven.

Jacob Hasty gave up a sloppy run in the seventh on two walks, a wild pitch and a ground out and Trent Ventmieir gave up a solo home run to Christopher Sargent in the eighth.