Senior Abigail Rendle entered the South Lakes program as a one-dimensional player, strictly scoring her baskets around the hoop.

At the Seahawks’ senior day Saturday, the 6-foot-4 Rendle showed how much she has improved since then, posting a stat line of 21 points, six rebounds, five blocks and three assists as No. 17 South Lakes beat Conference 6 foe No. 15 McLean, 54-39.

“As a player I’ve gotten physically stronger,” said Rendle, who signed with William and Mary in November and surpassed the 1,000-point career mark Jan. 28 against Yorktown. “I feel like I’ve improved as an all-around player because I’m now a threat around the paint instead of just the low block.”

The Reston school’s gymnasium had several cameras from Monumental Network on hand, but Rendle was undeterred as she played one of her best offensive games in a South Lakes uniform, scoring 16 points in the first half.

Rendle hit four elbow jumpers to keep the Highlanders’ defense honest and eclipsed the 20-point mark for the second time this season.

“Her midrange shot was dropping for her, and she was very confident in the way that she played,” South Lakes Coach Christy Winters-Scott said. “People think that she is just an inside scorer, but she does have great touch from the outside.”

Rendle and Princess Aghayere (14 points, 10 rebounds) combined for 16 points in the first quarter as South Lakes (19-3, 9-2) jumped to a 19-9 lead after eight minutes. McLean (19-3, 8-3) battled back to cut the deficit to six at the half.

In the third, South Lakes put the clamps on defensively to outscore McLean 13-5 and led by double digits for the remainder. McLean senior Cami Prock scored a team-high 16 points and Maia Lee poured in 11.

The win gives the Seahawks the No. 2 seed for Wednesday’s Conference 6 tournament opener, in which they will meet the No. 7 seed at home. And it avenges a tough 48-44 loss to McLean on Jan. 29 , South Lakes’ first area loss of the season.

“It’s a good place to have in the playoffs, but we can’t think like that,” Seahawks senior guard Sasha Sprei (nine assists) said. “Any team we face we’re going to have to play hard, no matter if we were the No. 2 or No. 3 seed.”