Danielle Smith scored off an assist from twin sister Erika with 36 seconds left to lead sixth-ranked Salem past 11th-ranked Dover, 1-0, in the Division I field hockey preliminary round in Salem on Thursday afternoon.

Salem players mentioned during a timeout with 45 seconds left that Dover (5-10) had been playing off the post.

After the timeout, Erika Smith found her sister near the left post and Danielle had room to kick it past Dover goalie Meghan Hill (13 saves).

Brianna Rastello saved one to record the victory for Salem (9-4-2), which advances to play third-ranked Timberlane of Plaistow in the quarterfinals at 2 p.m. Sunday in Plaistow.

Bishop Guertin 1, Manchester Memorial 0: Caley Prunier scored during a scramble in front in the 17th minute and eighth-ranked Bishop Guertin of Nashua held on to edge ninth-ranked Manchester Memorial in Nashua.

Carly Caveny assisted on Prunier's goal and Elizabeth DiCesare had nine saves to earn the win for the Cardinals (8-7).

Paige MacKenzie saved five for the Crusaders (7-8). Bishop Guertin faces top-ranked Pinkerton Academy of Derry in the quarterfinals at 2 p.m. Sunday in Derry.

Londonderry 2, Bedford 0: In Londonderry, the Lancers avenged a 4-3 regular-season overtime loss in Bedford.

Junior Tianna Federico, who leads the Lancers with nine goals and five assists, and sophomore Jackie Curtin (seven goals, five assists) scored.

Federico assisted on Curtin's goal 8:22 into the game and Curtin returned the favor in the 23rd minute.

Samantha Harris had two saves for the seventh-ranked Lancers (10-5), who advance to the quarterfinals to face second-ranked Winnacunnet at 2 p.m. Sunday in Hampton. Mary-Kate Heald had 20 saves for the 10th-ranked Bulldogs (5-10).