The Bears improved to 3-22 overall and 1-11 in the Mid-Eastern Athletic Conference, and the Eagles fell to 12-13 and 9-4.
Coppin's Larrisa Carter (11 points, 12 rebounds) scored her 1,000th career point. Kyra Coleman and Ashle Craig each scored 16 points for the Eagles.
Carter's 1,00th point came at the free-throw line with 15:35 left to tie the game at 37.
"It's a nice accomplishment, but it doesn't feel good because we lost," Carter said.
Carter became the 14th women's player in Coppin State history and second this season to reach the 1,000-point plateau. She is the fourth Eagles player in the past three seasons to score 1,000 career points. The others are Jeanine Manley (2011-12), Leola Spotwood (2012-13) and Coleman (this season against Alabama on Dec. 29).
"She's the type of person who gives everything that she has," Coppin coach Derek Brown said.
Navy 79, Lehigh 59: Kara Pollinger had 18 points to lead five Mids in double figures past the Mountain Hawks (11-14, 4-10 Patriot League.
Navy (21-5, 13-2) remains in first place, a game ahead of American (12-3) and 11/2 ahead of Army (10-4).
Navy ended the game shooting 50.8percent from the field and making 12 of 25 3-point attempts (48.0 percent). Helping the Mids to that mark was their recording 20 assists on their 30 made field goals.
Bucknell 70, Loyola Maryland 49: Shelby Romine scored a game-high 21 points and the host Bison (14-11, 9-6 Patriot) beat the Greyhounds (5-21, 2-13).
With two first-half 3-pointers, Loyola Maryland's Nicole Krusen became the school's all-time leader in made 3-pointers.
UMBC shot 50 percent for the third straight game, but the Retrievers took just 34 shots after turning the ball over to Stony Brook 28 times.
Virginia State 67, Bowie State 45: The visiting Panthers (8-14, 5-9 Central Intercollegiate Athletic Association) avenged a loss to the Bulldogs (10-12, 5-9) earlier this season.
Donia Naylor had 16 points and 12rebounds for Bowie State, which led for the first 10 minutes of the game.
Christopher Newport 69, St. Mary's 52: Shana Lewis had 20 points in a losing effort as the Seahawks (9-14, 5-10 Capital Athletic Conference) fell to the host Captains (21-3, 13-2).
St. Mary's trailed 36-21 at the half.
McDaniel 66, Johns Hopkins 63: Katie Clark's last-second attempt from beyond the arc bounced off the back of the rim, and the visiting Green Terror (18-5, 13-4 Centennial Conference) held on to beat the Blue Jays (16-7, 13-4).
Swarthmore 80, Washington College 67: Katie Lytle had 20 points and a game-best 17 rebounds and five steals to lift the host Garnet (13-10, 8-9 Centennial) over the Shorewomen (7-16, 6-11).
Emily Hubley had 16 points for Washington College.
York 89, Frostburg State 62: Elaina Hummel had 15 points, but the host Bobcats (8-16, 3-12 CAC) lost to the Spartans (22-2, 14-2).
Catholic 62, Goucher 55: For the second time this season, the host Gophers (6-17, 2-11 Landmark Conference) hung with the Cardinals (18-5, 11-2) for a while, but lost.
Amaka Ezeani led Goucher with 21 points.