When they talk about the great games in the history of St. Mary’s basketball, the performance the Spartans put up in the second half against Arlington Catholic will long be remembered.Nick Gagliolo scored 26 of his game high 29 points in the second half, going over the 1,000 point mark in the process, as the Spartans put up an astounding 60 points to turn a 35-18 deficit into a 78-63 win over the Cougars.”That was clearly a tail of two halves,” joked Spartans coach Kevin Moran. “These kids dug down somewhere deep and all the credit goes to them. What they did is something I haven’t seen in a long time.”Gagliolo entered the game needing 15 points to reach the 1,000 mark and from the way things began, it was looking like it would wait until Friday to happen. AC led 12-7 after one and extended the lead to 35-18 thanks to ice cold shooting from the Spartans.After regrouping at halftime, what happened for St. Mary’s (13-3) over the next 16 minutes can only be described as astounding.Gagliolo and Devin Thompson would combine to score 38 second half points as St. Mary’s put up 28 third quarter points to tie the game. That was just a warm-up, though, as they added 32 more in the fourth period to blow the doors off the Cougars.”It’s fantastic that Nick did what he did (Monday),” Moran said. “It was obvious early that he was pressing it a bit, but he settled down and the flow of the game got him his points.”Tommy Deveau added 12 points and Matt Manning finished with 10 for the Spartans, who now sit atop the CCL Large standings.Chelsea 69, Peabody 67At Chelsea, it was another battle to the finish between the Red Devils and Tanners as the hosts picked up their second two- point win over Peabody in a little over a week.Mike Gould and Steve Girolamo led Peabody (7-7) with 21 points. The Tanners are back in action tonight against Marblehead.Kennedy Charter 58, KIPP Academy 25At Roxbury, Pedro Morales had 11 points. KIPP is now 1-10.GIRLS BASKETBALLArl. Catholic 55, St. Mary’s 38At Conigliaro Gymnasium in Lynn, the Spartans (8-6) gave one of the state’s top teams a run for three quarters, but ran out of gas down the stretch.Sharell Sanders had 20 points to lead the Spartans. Jennie Mucciarone chipped in 11 in the loss.Click here for photosMystic Valley 39, Tech 35At Malden, Tech (3-13) had a late lead but couldn’t hold on as the hosts rallied in the final minute to get the win. Hattie Watkins led the Tigers with 16 points while Claribelle Ramirez had nine and Tori Park added eight.BOYS HOCKEYSt. Mary’s 5, St. Peter Marian 2At the Hart Center in Worcester, the Spartans (12-1-2) made it 14 games without a loss as they rallied for four unanswered goals after trailing 2-1 in the second period.Frank Moreschi and Tim Aylward had a goal and an assist for St. Mary’s. Eric MacAdams, Jordan Manthorne and Jarrod Fitzpatrick also scored with Cam O’Neill adding two helpers.GIRLS HOCKEYMarblehead 4, Stoneham 4At Stoneham, the Magicians (6-6-2) were leading 4-3 in the third period, but had to settle for the tie when Stoneham found the net 9:10 into the frame. Marblehead had first period goals from Rachel McKay and Brittany Smith with Ally Healy assisting on both. Smit cored her second of the night early in the third period (McKay assist) and less than a minute later, Eliza Quigley scored from Emmarose Winder. Sabrina Doughman faced 13 shots for the Magicians, who play Saturday at Auburn (4).GYMNASTICSFenwick 123.8, Cambridge 105.3At Bakers Gymnastics School in Salem, Eileen DeLory won the all-around at 33.75 and swept all three events. Kim Shinnick finished second in all-around at 31.6SWIMMINGArl. Cath. 87, St. Mary’s 75At Mystic Valley, the Spartans (3-5) got second places from Eddie Traniello in the 100 free (1:00) and Dan Kraemer in the 200 free (2:28.82).The 200 free relay also finished second.