Trae Summers had 20 points to power host No. 11 Lake Clifton past No. 12 Forest Park, 70-65, on Tuesday.
The Lakers (3-0) used pressure defense to build a 10-point lead in the first half. The Foresters (3-1) came as close as four points in the second quarter.
Aaron Parks added 17 points for Lake Clifton.
No. 3 Digital Harbor 76, Northwestern 64: Antonio Manns scored 28 points and Nyme Manns had 16 to power the host Rams (3-1) past the Wildcats.
No. 9 Dunbar 61, National Academy Foundation 28: Donte Pretlo and Evan Singletary each scored 13 points to lead the host Poets (3-0).
Southwestern 58, Mervo 56: The Sabers broke the second tie, at 56, in the final minute of play when Willie McDowell scored on a put-back to lift Southwestern (2-2) over the host Mustangs (0-4).
Malcolm Miller led the Sabers with 17 points.
McDonogh 52, Calvert Hall 49: In the overtime, the Eagles held the host Cardinals to one point and went 4-for-4 from the line to win.
Calvert Hall trailed 48-45 with 50 seconds left when Justin Beck made a 3-point play, making the layup, getting fouled and sinking the free throw to force overtime.
Carver 54, Maritime Industries Academy 27: Devin Colston had 11 points and 10 rebounds for the host Bears (3-1).
Girls
No. 1 Archbishop Spalding nationally ranked: The Cavaliers (6-1) have been ranked as the 25th team in the nation by USA Today's Super 25.
No. 3 Joppatowne 74, Havre de Grace 28: TroyQuay Malloy had 15 points and Shakara Head added 14 to power the visiting Mariners (3-0) past the host Warriors.
Joppatowne led 47-9 at the half.
No. 5 Digital Harbor 75, Northwestern 9: Alexus Harrison had 25 points and 17 rebounds, and the visiting Rams (3-1) held the Wildcats to one point in the first half.