Malik Tyne scored five of his 11 points in overtime as No. 15 John Carroll upset No. 2 Calvert Hall, 47-44, Tuesday night.
Calvert Hall (23-4, 12-4 Maryland Interscholastic Athletic Association A Conference) was held to one point in the second quarter and trailed 19-12 at the half.
The host Patriots (21-12, 10-6) took an 11-point lead on a dunk by Mike Tertsea in the third quarter. But the Cardinals, led by Drew Edwards with 19 points, used a full-court trapping defense to rally and force overtime.
No. 5 Lake Clifton 74, Dunbar 56: Garrett Green scored 16 points and the Lakers (14-2) forced turnovers to build the lead against the host Poets (6-8) in the second half.
No. 6 Edmondson 62, Digital Harbor 52: Sean Burke scored 15 points to lead the visiting Red Storm (13-3).
Archbishop Spalding 51, Loyola 48: The host Dons (8-15, 5-10 MIAA A Conference) had a chance to tie or win with 10 seconds left but failed to convert. Charles Meiklejohn had 14 points for the Cavaliers (14-10, 8-7), and Phil Heinrich had 13 points for Loyola.
Southern girls basketball coach Linda Kilpatrick earned her 500th career victory Tuesday night with the Bulldogs' 54-45 victory at Glen Burnie.
Kilpatrick, who has more wins than any other active girls basketball coach in the Baltimore metro area, became only the second to reach 500. North Harford coach Lin James won 608 games before retiring last season.
"It was a relief that it was finally over with," Kilpatrick said with a laugh. "A couple players that I hadn't seen in forever snuck in and were there tonight, surprised me at the end of the game. And that's what it's all about, how I've touched these kids, how they still support me — and my kids just played their hearts out."
Jordyn Brown led the Bulldogs (8-11) with 27 points.
No. 1 McDonogh 70, Archbishop Spalding 35: The visiting Eagles (23-2, 14-0 Interscholastic Athletic Association of Maryland AConference) outscored the Cavaliers 22-6 in the final quarter.
Lilli Robb led the way for McDonogh with 16 points. Victoria Reynolds had 15 points for Spalding (5-12, 4-9).
No. 8 City 78, Patterson 15: Sabreen Muslim scored a game-high 17 points and sisters Kanae and Koraan Sydnor added 15 and 14 points, respectively, to lead the visiting Knights (16-1) past the Clippers.
City led 49-6 at the break.
Friends 54, Glenelg Country 51: Rachel Kehoe (21 points) made two free throws with five seconds left to lead the Quakers (7-10, 6-8 IAAM CConference) past the host Dragons (8-7, 7-7).
Baltimore Sun staff contributed to this article.