Tennessee forward Bashaara Graves (12) reacts late in the in their third-round women's Southeastern Conference tournament NCAA college basketball game against the LSU Friday, March 7, 2014, in Duluth, Ga. Tennessee won 77-65.

DULUTH, Ga. - Isabelle Harrison scored 21 points, Meighan Simmons and Bashaara Graves each added 14 and No. 6 Tennessee used an overpowering late run to beat LSU 77-65 in the quarterfinals of the Southeastern Conference tournament on Friday night.

The second-seeded Lady Vols (25-5) have won five straight and 11 of 12.

Theresa Plaisance finished with 21 points and Danielle Ballard scored 15 for LSU (19-12). The Lady Tigers, seeded 10th, have lost seven of eight.

Tennessee's 19-0 run late in the second half made it 70-55 lead on Simmons' two free throws, but the game's first 35 minutes were tough on the fifth-leading scorer in Tennessee history.

Simmons, who had averaged over 22 points in the previous three games, was just 3 for 16 from the field before her reverse layup from the baseline ended a fast break to force a 55-all tie.