The Crusaders (11-11, 5-4 Patriot League) rallied to within two points with nine seconds left in the game, but Jarred Jones (John Carroll) hit one of two from the line with four seconds left for the final score.
Kostecka, the freshman from Clarksburg, assisted on an alley-oop layup by Cam Gregory, then hit a 3 from the left wing with 5:01 left in regulation, staking the Greyhounds (10-10, 4-5) to 56-48 advantage.
Loyola's lead came during a stretch when Holy Cross did not score a field goal for more than five minutes. Malachi Alexander, who matched Kostecka for game-high honors with 20 points, made a 3 for the Crusaders at 6:11, and Holy Cross scored six points off free throws before a 3 by Alexander went down with 67 seconds left.
Navy 71, American 53: Bryce Dulin scored 15 points as the visiting Midshipmen (11-10, 6-3 Patriot League) cruised.
Dulin was 5-for-7 from the field for Navy. Tom Lacey had 14 points and 15 rebounds, Hasan Abdullah had 14 points and five assists, and Shawn Anderson and George Kiernan each added 10 points. The Mids outrebounded the Eagles (5-15, 2-7) by 36-19.
Navy led by 10 at halftime, and a 3 by Kiernan early in the second half extended the lead to 46-32 with 14:30 to play.
American pulled within 55-48 on a pair of free throws by Charlie Jones (Mount Saint Joseph) with 6:46 remaining but could not get closer.
The Seawolves improved to 11-9, 6-1.
Senior forward Will Darley (Dulaney) and Jairus Lyles scored 20 points each for UMBC. Rodney Elliott (John Carroll) sparked the second-half comeback by scoring all of his 13 points in the final 20 minutes.
But UMBC could not overcome 34.4 percent shooting against the defending America East champions.
UMBC women 67, Stony Brook 61: Pandora Wilson had a game-high 18 points and the host Retrievers (9-11, 4-3 America East) won their fourth straight.
UMBC went on a 17-7 run in the second quarter. Stony Brook (9-11, 2-5) rallied in the closing three minutes of the game, but Wilson scored four of the next six points to preserve the Retrievers' lead.
UMBC finished shooting 42 percent from the field, going 13-for-16 from the line in the win. The Retrievers forced 13 turnovers, while outscoring the Seawolves 40-30 in the paint. Christa Scognamiglio led Stony Brook with 17 points and 10 rebounds on 7-for-14 shooting.
8 enroll early, are OK to practice in spring
Maryland football coach DJ Durkin announced Wednesday that eight players who committed to the Terps for next season have enrolled in school and will be eligible to participate in spring practice. Two of them, safety Markquese Bell and cornerback Deon Jones, are considered four-star prospects and are the two highest-rated players among the 28 who have committed to Maryland for the 2017 season. Bell is ranked No. 88 in ESPN's top 300, with Jones at No. 155. Among the other early enrollees, who won't count against the 25-player limit for the team's 2017 recruiting class, junior college transfers Nick Underwood, a linebacker, and Alex Woods, a cornerback, were in the top 100 nationally coming out of high school a year ago. Also enrolling early are Fofie Bazzie, a three-star cornerback from Gaithersburg; brothers Bryce and Ryan Brand, a three-star linebacker and junior college transfer quarterback, respectively, from Detroit; and Tyran Hunt, a three-star offensive lineman from Courtland, Va.
LB Ali'i Niumatalolo decommits from Boise St.
Former Broadneck football standout Ali'i Niumatalolo has opened his recruitment and is considering a variety of options, his mother confirmed. Niumatalolo, rated as a three-star recruit by most services, announced via Twitter on Monday night that he was decommitting from Boise State. The 6-foot-2, 220-pound linebacker had given an oral commitment to the Mountain West Conference school last October, but ultimately did not sign a national letter of intent. Barbara Niumatalolo confirmed the news about her son's latest decision when reached Tuesday but declined to comment further. Ali'i Niumatalolo and Boise State jointly agreed that he would not sign last February since he was going on a two-year Mormon mission. Niumatalolo left for Chile in September but suffered an illness that forced him to return home. Niumatalolo, the son of Navy coach Ken Niumatalolo, indicated in the Twitter message that he could still wind up at Boise State.
—Bill Wagner, Baltimore Sun Media Group
More college football: The San Diego Bowl Game Association announced that it is discontinuing the Poinsettia Bowl. The group's other postseason game, the Holiday Bowl, will continue. Average Poinsettia attendance through its 12 years was 32,264, but the game's four smallest crowds were in the past six years. The only games during that span with more than 30,000 in attendance were when San Diego State played in 2012 and 2014. The bowl averaged 39,274 fans in four games involving Navy and 28,759 in eight games without the Midshipmen.
Football obituary: Former Notre Dame and Washington Redskins quarterback Ralph Guglielmi has died. Gloria Braswell with the Padgett Funeral Home in Wallace, N.C., said Guglielmi died Monday. He was 83, and the cause of death was not made public. Guglielmi was a consensus All-American as a senior in 1954 and placed fourth in Heisman Trophy voting that year after throwing for 1,160 yards and leading the Fighting Irish (9-1) to a No. 4 final national ranking. He was enshrined in the College Football Hall of Fame in 2002. The Redskins drafted him in 1955 with the third overall pick, and he played a total of seven professional seasons with Washington, the St. Louis Cardinals, New York Giants and Philadelphia Eagles.
Major League Soccer: Freddy Adu, the one-time prodigy from Rockville who played for D.C. United at age 14, will train with the Portland Timbers during the preseason, the team said. Adu, 27, is expected to join the Timbers this week in camp in Tucson, Ariz. When he was 14, Adu was the No. 1 pick in the 2004 MLS draft, going to United. He is the youngest player to score a goal in league history. He left MLS for the first time in 2007 and bounced around Europe before a two-year stint with the Philadelphia Union from 2011 through 2013. Overall, he played for 13 teams in 13 years. Adu most recently played for the North American Soccer League's Tampa Bay Rowdies but parted ways with the team last year.
Equestrian: Fair Hill Natural Resource Management Area in Cecil County has been identified as one of two candidates to host a four-star event in the fall of 2019, the United States Equestrian Federation announced.
Baseball: Left-handed pitcher Adam Kolarek (Maryland, Catonsville) agreed to a minor league contract with the Atlanta Braves that includes an invitation to major league spring training. Kolarek, who was in the Orioles minor league organization briefly after the 2015 season, he had a 3.13 ERA with 63 strikeouts over 601/3 innings in Triple-A and Double-A last season in the Braves system.
College baseball: Maryland right-hander Mike Rescigno was picked as Perfect Game's top-ranked senior prospect for the 2017 MLB draft. Rescigno, who converted to pitching after his freshman season, dominated in the Cal Ripken League last summer en route to also being named Perfect Game's top draft prospect in the Maryland-based league. He went 2-1 with a 1.14 ERA and 19 strikeouts in 15.2 innings for the Baltimore Redbirds. Baseball America also named the right-hander the top prospect in the Ripken League. In 23 appearances for the Terps last season, Rescigno went 2-1 with a 5.59 ERA, striking out 23 and saving three games. He was the 25th-round draft pick of the San Francisco Giants. Terps catcher Nick Cieri was ranked No.25 among seniors. Maryland shortstop Kevin Smith was ranked 10th among juniors. The Terps are ranked in three preseason polls: D1Baseball (22), Baseball America (24) and Perfect Game (23). ... Towson sophomore shortstop Richie Palacios was named to the All-Colonial Athletic Association preseason team. The Tigers were picked to finish eighth in the nine-team league. ... Salisbury is ranked No. 24 in the D3baseball.com/NCBWA preseason Top 25.
Women's college basketball: Loyola Maryland junior guard Bri Betz-White was named Patriot League Player of the Week and freshman guard Stephanie Karcz earned Rookie of the Week. ... Bowie State junior guard Kiara Colston was named Boxtorow Division II National Player of the Week and Central Intercollegiate Athletic Association Player of the Week. … Stevenson senior forward Sara Tarbert was named Middle Atlantic Conference Commonwealth Player of the Week. ... Harford Community College (17-2) moved from No. 17 to No. 15 in the National Junior College Athletic Association Division I rankings.