STARKVILLE, Miss. — Less than 24 hours after earning an extra-inning win, the No. 11 LSU softball team exploded for 12 runs on 12 hits in a 12-1 five-inning, series-clinching victory over Mississippi State on Sunday at Nusz Park.

LSU (32-13, 7-11 Southeastern Conference) scored in all but the first inning, putting up eight in fifth to top the Bulldogs (23-20, 3-12) to earn its second conference series victory on the road.

“I think this was a big series for us to move this team forward and continue to build our confidence,” coach Beth Torina said. “I think we’ve been trying to get better all season long, and I like how we improved this weekend.”

Freshman Sydney Smith (8-2) held MSU to an unearned run on two hits with three strikeouts in earning her first career SEC win. She needed just 68 pitches and pitched eight innings during the weekend, not issuing a walk with six strikeouts.

Five LSU players earned multiple hits, led by Bianka Bell, who went 2-for-3 with four RBIs coming on a grand slam — her second home run in as many days and ninth of the year. Amber Serrett went 2-for-2 with three RBIs and a run, and Emily Griggs drove in two and scored once on two hits. Kellsi Kloss scored twice, and Allie Walljasper scored once as both had a pair of hits.

Cori Cooper took the loss, allowing three runs (two earned), on three hits with three walks and no strikeouts. MSU pitchers combined to issue seven walks.

Leading 4-1, LSU put the game away in the fifth as Walljasper and Quinn singled, and a walk to Serrett loaded the bases, forcing an MSU pitching change. A wild pitch ensued, allowing Walljasper score. A walk to Landry loaded the bases, and one out later, Griggs walked to bring in another run to make it 6-1 and prompt another MSU pitching change.

From there, Bell’s grand slam cleared the wall in right center to put the Tigers up 10-1.

Jaquish walked, and singles from Kloss and Walljasper loaded the bases for Serrett, who singled to center bring in the final runs of the game.

LSU fell behind 1-0 in the first, but Griggs’ RBI single scored Constance Quinn in the top of the second to tie the game at 1.

In the third, Quinn’s sacrifice fly to make it 2-1, and double by Serrett brought in Taylor Lockwood to make it a 3-1 game.

In the fourth, Simmons legged out an infield single, stole second and later scored on Jaquish’s sac fly to put LSU up 4-1.

LSU hosting the Northwestern State on Wednesday at 6 p.m. at Tiger Park.

Late Saturday

LSU 5, MISSISSIPPI STATE 2, 12 INNINGS: LSU scored three runs in the top of the 12th inning to get the win late Saturday.

Bailey Landry led off the top of the 12th with a triple, and Sandra Simmons drove her in with a deep fly to center for a 3-2 lead.

Emily Griggs walked, and walks to Bianka Bell and Carley Hoover loaded the bases. One out later, Sahvanna bounced a single off the wall to bring in two for the final margin.

Hoover (12-6) gave up one hit, one walk and struck out six in 5.2 innings of relief to get the win. Alexis Silkwood (3-6), one of five pitchers used by the Bulldogs, took the loss, giving up seven hits, four walks and four runs with one strikeout in 5.1 innings.