A pair of baskets each by Sydney Napier and Wendy Logan pulled Garrard into a 16-16 deadlock going into the second period.
Alcorn, who scored nine first-half points, hit a pair of baskets to give Boyle a 27-22 advantage before Abby Parsons, who had 10 first-half points to lead the Golden Lions, tallied twice to pull Garrard to within 27-26.
Rebels close strong in first half
Boyle closed the period with a 13-0 scoring run to lead 40-26 at the half. The Rebels put on a 3-point display by connecting on three straight in the final two minutes of the half - one each by Hafley, Mills and Hall - and baskets by Hafley and Ashley Chalk following steals enabled Boyle to pull away just before the intermission..
"We were tense early in the games and rushed a couple shots, but we put on a clinic in the second quarter," Mason said. "We got up and down the floor and hit good shots at the basket. I told everybody last year we were going to shoot the three, and this year we were going to make them. I'm hoping this carries over."
Garrard coach Jenny Teater said it was just a matter of her team being tense against Boyle's defensive pressure.
"We started standing around and didn't react to the ball late in the half," the Garrard coach said. "Their shots began to fall and we couldn't stop the run."
Garrard did have a scoring run of its own to begin the second half. Logan scored five straight points while Chelsea Denny, Ashley Meadows and Napier added two points to run to trim the Boyle lead to 42-37.
"I knew Garrard would come out and make a run on us," Mason said. "We are not used to having the lead and we came out flat. We got into a helter skelter mode and they made us pay. What pleased me, though, was the fact we held our composure and got back to what we needed to do.
"Abby (Parsons) hurt us in the first half, and we tried to keep running different people at her in the second half. It's hard for anyone to play at that pace for 32 minutes."
Teater pleased with second half effort
Teater was pleased with the way her team battled back in the second half.
"We came out and matched their intensity level and hit some big shots," she said. "We actually didn't shoot the ball that bad (49 percent), but we just didn't get off enough shots. Any time you turn the ball over 29 times its hard to overcome, but it was just the first game of the year and we can correct the mistakes we made."
Leading 48-41 entering the fourth quarter, Hall hit three treys during the final period while Hafley added six of eight free tosses to seal the win.
Boyle canned 10 of 27 shots from beyond the arc compared to one of six for Garrard. The two teams were deadlocked 29-29 on the boards as Logan pulled off eight missed shots and Meadows seven for the Lions. Chalk, Hafley and Cassie Anderson pulled off five missed shots each for Boyle.
BOYLE - Ashley Chalk 4, Cassie Anderson 9, Amber MIlls 11, Allie Hafley 15, Sara McCann 2, Torrie Alcorn 11, Sarah Hall 19.
GARRARD - Chelsea Denny 2, Ashley Meadows 7, Abby Parsons 18, Wendy Logan 17, Sydney Napier 12, Jessica Cole 2.