ROXBURY ? With less than two minutes remaining against Dorchester, Lynn Tech found its slim lead slipping away, like so many footballs had slipped through wet hands on a sloppy, sodden Saturday morning.But when it came time to make a key play to preserve the victory, the Tiger defense didn’t disappoint.Tech stopped Dorchester on fourth-and-11 at the Tigers’ 24-yard line to pull out a 14-8 victory in the team’s season opener at Madison Park High School.The game was originally supposed to be played at White Stadium in Boston, but the location was changed due to poor field conditions at White Stadium.When Dorchester’s Peter Berment intercepted a Dustin Rooney pass in Tiger territory late in the final period, it looked like Tech might lose a game it never trailed in. But following a Bears first down at the Tech 23 with just under two minutes left, the Tiger defense kicked it up a notch.Ryan Murphy dropped Dorchester signal-caller Anthony Bennett for a three-yard loss on first down, and the Bears fumbled on their next two plays to bring up fourth down. Bennett rolled out to his left on the play, but his pass only gained two yards, ending the threat and allowing the Tigers to drain the clock.”In the end, the defense made the stop when they had to,” Tigers coach Gary Sverker said. “We put a little pressure on their quarterback, covered our zones, and picked up the run coming through the middle.”Tech looked to have all the momentum in the first half. The Tigers dominated the ball, pounding run after run through the heart of the Bears’ defense. Tech scored the first touchdown of the game on a nine-yard romp by Ryan Murphy, which Stephan Caisse followed with a two-point conversion for an 8-0 lead.Dorchester, meanwhile, had trouble converting on third and fourth down. The Bears were stopped on fourth down three times in the opening half, and were unable to get much going offensively.”We can’t afford to make mistakes like that,” Bears coach Rich Moran said. “We came back in the second half, but we wasted too many opportunities.”Following a Dorchester turnover on downs early in the second quarter, Tech needed only two plays to score again. A late hit penalty on Dorchester brought the ball to the 19-yard line, and Pedro Martinez scored on the next snap to give Tech a 14-0 lead.The third quarter was marred by a slew of fumbles ? eight in the span of 15 plays, to be exact.”We really didn’t execute in the second half,” Sverker said. “But to their credit, they came right at us.”Dorchester’s only scoring drive of the game began early in the fourth. Led by Berment, Bennett, and Eric Parish, the Bears marched downfield in eight rushing plays. Berment capped the drive with a nine-yard touchdown and added the conversion to close the gap to 14-8.After the game, Sverker said he was relieved to come out with a win, but that his team still has much to work on going forward.”Well, we won,” he said. “We’ll look at the film. But we need to work on our execution.”