Chelmsford High sophomore guard Claire Markey had 12 points, 10 rebounds and 5 assists and the Lions held off Boston Latin, 46-44, in a Division 1 North girls basketball first-round game Thursday night.
After leading 33-16 at halftime, Chelmsford went cold on its home court.
Junior guard Trish Blumeris sank two crucial free throws with 16 seconds left to put the Lions up 46-44. Boston Latin scored a basket with 1.2 seconds left for the final.
Division 1 North
Boston Latin 44
Blumeris finished with 10 points, 10 rebounds and 7 steals for No. 5 seed Chelmsford (18-3), which moves on to a quarterfinal at No. 4 Woburn (18-2) on Sunday night.
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"We couldn't make a basket in the second half," said Chelmsford coach Kevin Branco. "But we played well on defense all night. That's what gave us the lead and allowed us to hold on to the win."
Junior forward Sara DaSilva was in foul trouble, but contributed 6 points to the victory.
No. 12 seed Boston Latin finished 10-11.
Division 3 Central
Junior guard Samantha Trearchis' 16 points led No. 5 seed Tyngsboro (17-4), which advances to a semifinal against No. 1 seed Sutton next Thursday at WPI.
Trearchis also had 6 assists and 5 rebounds, and played outstanding defense.
Junior guard Kendra Shaw added 11 points for Tyngsboro, which led 26-13 at halftime and 34-25 after three quarters.
Senior forward Kristin Smith and junior forward Brit White scored 7 and 6 points, respectively, for No. 4 Littleton, which finished 16-4.