Frank Harden scored 17 points and pulled down 10 rebounds to lead visiting Patterson (2-1) over McDonogh (2-1), 66-55.
Derek Hosley scored 15, and Kenneth Clark added 14 points and 14 rebounds for Patterson.
McDonogh was led by Ayinde Stewart (14 points) and Geoff Streat (12 points).
Herman Costley scored a game-high 43 points in a losing effort, as Westminster (2-2) fell to host Howard (4-1), 81-73 in overtime. Alec Sutton and Dax Mathews led Howard, scoring 20 and 19 points, respectively.
Shane Tanzymore's 21 points and 17 rebounds led host St. Paul's (9-1, 3-0) to an 89-45 victory over Arlington Baptist (2-4, 0-2) in a Maryland Scholastic Association C Conference game. Rob Bouse added 17 points for the Crusaders.