The Lady Tigers (4-8, 2-3 in Region 7A-AA) were led at the plate by Weeks, who was 3-of-4 and scored three of the team's runs.
Kaleigh Liscio scored the other run in the fifth inning for Adairsville.
"Cassidy really helped us out by keeping the baserunners under control," head coach Meghan Johnson said. "That was important. We were lucky to win."
She said while the Lady Blue Devils got only one hit on the evening, the Lady Tigers made seven errors.
Weeks, who didn't allow an earned run, recorded nine strikeouts. She also had a double among her three hits.
Liscio was 3-of-4 and Caitlin Berkenkamp smacked a double for the Lady Tigers. Also, Haley Lancaster went 1-of-2 with a sacrifice and accounted for two of the team's two RBIs.
Adairsville next plays Wednesday, when it hosts Coosa in a region game.
Excel 5, North Cobb 0
Janna Scheff blanked North Cobb Christian 5-0 on Thursday as Excel Christian Academy claimed its second region win of the year.
Excel, ranked number 6 in the GACA coaches poll, took an early lead, scoring two runs in the second inning. The Lady Eagles added three more in the fifth inning, accounting for all of the scoring.
"Janna pitched solid," head coach Danny Deems said.
Scheff went seven innings on the evening, allowing four hits and one walk while recording 11 strikeouts.
She also helped her cause at the plate, where she went 2-of-3 with two RBIs.
Other Lady Eagles contributing at the plate in the 12-hit game were Abby Hibbard, 2-of-3; Kaye Sullins, 2-of-3; Kelly Sullins, 1-of-3 with one RBI; Eden Fulmer, 1-of-3 with two RBIs; Stephanie Rosser, 2-of-3; Amanda Haney, 1-of-2; Sydney Howell, 1-of-4.
In the field, the Lady Eagles (5-0, 2-0 in 6A-A) turned in an error-free performance.
The Lady Eagles next play against top ranked Gordon Lee on Tuesday.
Lady Canes wins
pair at volleyball
Cartersville swept East Paulding and Woodland in volleyball action Thursday.
The Lady Purple Hurricanes easily handled East Paulding 25-11 and 25-8 in the match, played at Woodland High.
Leading the way for the Lady Canes were Janezka Cruz, with four kills and two aces; Jessica Boss, one kill and 3 aces; Samantha Conley, nine assists, nine aces.
Cartersville defeated Woodland 25-17 in their first matchup and 26-24 in the second.
Cruz had four kills and four aces while Katie O'Connor recorded three kills and three aces.
The win improves Cartersville's overall record to 5-6.
The Lady Canes return to the nets at home Tuesday, when they open their region schedule against Central of Carrollton.
Coach Scott Busby, head coach, said the Lady Canes are showing signs of improvement.
"We're starting to play a little tighter defensively," he said. "We're still improving every match."