CV-S entered the third quarter up, 38-22, but the Wildcats outscored the Patriots, 17-6, in the fourth. Milford closed to three points with 35 seconds left.
But Archer scored in the lane with 13 seconds left to restore CV-S’ lead to five.
Archer also contributed 17 rebounds for the Patriots (8-6, 6-5), who will play at Worcester on Friday.
Milford was led by Addy Lawson’s game-high 21 points.
Cooperstown 48, Hamilton 33
Cooperstown remained perfect in the Center State Conference, winning on the road behind Liz Millea’s game-high 16 points.
Sumer Murdock contributed 12 points and four steals for the Redskins (15-2, 9-0). Eight of her points came in the first quarter, which ended with Cooperstown leading, 19-6.
Nicole Cring contributed nine rebounds and Millea finished with five steals.
The Redskins face Sauquoit on the road Monday.
Jefferson 50, Gilboa 45
Elissa Starheim finished with 18 points, 13 rebounds and 10 blocks to lead host Jefferson (6-8, 5-7) to a Delaware League victory.
Shania Steenburgh contributed 15 points and 15 rebounds to the victory. Starheim and Steenburgh were 6-for-6 from the free throw line.
Jefferson next hosts South Kortright on Thursday.
Richfield Springs 27
Taylor Spranger scored 13 points to lead Schenevus (10-3, 10-2) to a road victory in the Tri-Valley League.
The Dragons trailed, 6-2, after one quarter. Then they outscored Richfield Springs (3-12, 2-10), 17-6, in the second quarter. Spranger had nine points in the second period. She finished with 10 rebounds.
Ashley Fuller had nine points to lead the Indians, who will travel to Milford on Friday.
Hancock 55, Afton 44
Rick Parsons scored 12 points and grabbed 12 rebounds as host Afton dropped a first round matchup in the Midstate Athletic Conference 9-12 Tournament.
Hancock outscored the Crimson Knights, 16-7, in the fourth quarter to pull away from a two-point game. Tyler Phillips scored 11 of his game-high 20 points over the final eight minutes.
Matt Olin had 12 points and eight rebounds for the Crimson Knights (3-14, 2-10).
Section Four Alpine
Windham swept the Section Four Alpine Ski meet at Hunter Mountain.
Aidan Cohane and Mattie Seamans paced the Warriors’ boys and girls teams with first place times of 31.20 and 35.66, respectively. Six of the top 10 boys and eight of the top 10 girls finishers were from Windham.