Four-time SEC champion and seventh-ranked LSU scored six unanswered runs to claim its opening league series of the year with a 6-1 win over Tennessee in Baton Rouge, La., on Sunday.
Junior Kristin Schmidt (10-5) notched six strikeouts and limited Tennessee to three hits to secure her second complete-game victory of the weekend.
LSU has not dropped a series since Alabama claimed three of four outings back on May 1-2, 1998, in Tuscaloosa.
The Tigers are now 18-6 overall with a 2-1 SEC mark, and Tennessee fell to 17-8 and 1-2 in the SEC.
The Lady Vols split with the Tigers in a Saturday doubleheader.
Tennessee senior Blaine Teasley belted a tie-breaking solo home run to lead off the seventh inning as the Lady Vols took a dramatic 3-2 win over the Tigers in game two.
Schmidt tossed a two-hitter during a 4-0 win in game one.
UT co-head coach Ralph Weekly said the Lady Vols didn't bring the same intensity Sunday as they had the day before.
"Although we talked to our players last night about not being satisfied with one win, I think that's tough for young players," he said. "We did not come out with the same emotion as we showed (Saturday).
"We played not to lose and that is all part of the learning experience in SEC softball."
Men's tennis splits
The No. 27 Tennessee men's tennis team got its first SEC win of the season over No. 15 Alabama on Friday, and responded with its third conference loss of the year to No. 19 Auburn on Sunday. Both matches were played on the Varsity Tennis Courts.
The Vols (7-5, 1-3 SEC) lost the doubles point but dominated singles play in their 4-1 win over the Crimson Tide.
Mark Dietrich, ranked 69th nationally in singles, clinched the match at No. 2 singles with a 5-7, 6-2, 6-4 win over 73-rd ranked Stephen Mitchell.
On Sunday, Tennessee garnered its first doubles point of the SEC season, but Dietrich was the only Vol to win a singles match in a 5-2 loss to the Tigers.
Women's tennis wins in Dixie
The doubles point proved to be the deciding factor on Friday in the 11th-ranked Tennessee Lady Vol tennis squad's 4-3 win over No. 31 Alabama in Tuscaloosa on Friday.
UT improved to 10-3 on the year and 2-1 in the SEC, while the Crimson Tide dropped to 10-2 and 2-1 in league action.
"Alabama is a competitive team," UT co-head coach Mike Patrick said. "We played well, but we're looking forward to continually getting better."
The Lady Vols played at No. 40 Auburn on Sunday, but results were not available at press time.