MCHS held a lead over Eagleville at the end of each of the first three quarters before having to come back to tie the game at the end of regulation.
In overtime, the Tigerettes did not score.
Marshall County fell behind early 7-4 before two Michala Hopkins free throws, followed by a Kiya Morris three-pointer got things going for the Tigerettes.
A Mecia Reed driving layup moments later gave MCHS an 11-7 lead and the Tigerettes would go on to score five more points before the quarter ended, taking a 16-7 into quarter number two.
Kemesha McFall opened up the scoring in the period with one of two from the free throw line and after an Eagleville miscue, Allison Hargrove found McFall underneath for another basket, opening up a 12-point MCHS lead.
With just under three minutes to go in the first half, a Christy Pettigrew three-bomb gave the Tigerettes their biggest lead of the ballgame at 25-11.
Hargrove scored on a drive to the hoop moments later to make it 27-13 before Eagleville's Alli Burns hit both ends of a one-and-one at the end of the half, making it 27-15.
Michala Hopkins knocked in a short jumper in the lane early in the third quarter, reopening a 14-point lead for Marshall County.
A Nicole Duke bucket finished an 8-0 run for the Lady Eagles, making it a 31-25 ballgame with just over two minutes to go in the third quarter and the Tigerettes turned the ball over.
One free throw by Duke with seconds left in the quarter made it 37-26 Tigerettes, entering the fourth quarter.
The Lady Eagles went off in the quarter, outscoring the Tigerettes 14-3 to take a 41-40 lead with 2:31 remaining in the contest.
Taylor Reed scored off a Marshall County turnover to give the Lady Eagles a 43-40 lead and after a Tigerette missed shot, Duke hit one of two from the charity stripe to open up a four-point 44-40 lead.
With 26 seconds remaining in the game, Pettigrew drilled both ends of a one-and-one and seconds later; Morgan Moyers stole the ball and was fouled.
Moyers also drained both shots to tie the game at 44 and an Eagleville last-second shot was no good, sending the game to overtime.
In the extra period, the Tigerettes turned the ball over three times and could not get a shot to fall as the Lady Eagles hit three free throws and a late basket by Kristin Barnes to win by the five-point margin.
Reed led the Tigerettes in the scoring column with nine points, Lyttle finished with seven, Hopkins had six, McFall and Pettigrew ended up with five points apiece, Hargrove and Morris scored four points each and Moyers and Katie Greer both netted a deuce.
Eagleville's Michelle Johnson led all scorers with 12 points, Duke was in double figures with 10, Burns had nine, Barnes ended up with eight, Reed scored seven and Chelsea Scott rounded out the scoring with three points.