The defending District 16 Little League champion Wyoma baseball team got off to a rousing start Saturday in defense of its title, defeating Winthrop, 10-1, behind the one-hit pitching of Katie Burt.This was the first round of the postseason process that determines the participants in the Little League World Series in Williamsport, Penn. The last – and only – team from District 16 to make it to Williamsport was the 2003 Saugus American squad.Burt is one of three holdovers from last year’s championship team. After the first inning, in which she gave up a walk, a hit and a run, she mowed the Winthrop hitters down in succession, eight of them coming via the strikeout.”She’s such a competitor,” said Wyoma manager Jeff Earp, “she had probably too much adrenalin going early. Once she settled in, she was unhittable.”Burt, who has the unique distinction of playing Little League in one sport while being on a high school varsity team in another (she was the starting goalie for last year’s English-sponsored girls hockey team), also collected three hits.Wyoma got 11 hits in all, two by Cullen Dunnigan, who hit a monster home run over the left-field fence at Revere’s McMackin Field.Brent Lozzi and Mike Auciello had two hits apiece.”It was a nice start,” said Earp. “It was nice to get it out of the way.”Wyoma plays Pine Hill – which drew an opening-round bye – Tuesday (5:45) at the Swampscott Little League field (which is located behind the middle school on Forest Avenue).”We expect Pine Hill to be very good,” Earp said. “They should be ready. We’ve heard good things about them.”Lynnfield 3, Nahant 2At Flynn Field (West Lynn American), Lynnfield advanced to play Revere Tuesday at a site to be determined. But most of the people there raved about Nahant’s Al Wallach, whose assortment of well-located fastballs (both regular and split-fingered) and curves kept Lynnfield off balance for four innings as Nahant built a 2-0 lead.”He didn’t throw hard,” said Lynnfield’s Kevin Canty Jr., “but he kept us off balance all night. The kid pitched great.””We knew they were a pretty powerful team,” said Nahant manager Joe Marini, “so we knew he had to mix his pitches and to locate, and he did. He kept them off balance, and that’s all we could ask for.”The game featured good pitching and good defense by both squads. Justin Foley pitched 4 2/3 innings for Lynnfield before giving way to Jake Rourke, who got the victory.Lynnfield was still trailing, 2-1, in the fourth when Foley hit a home run to tie the score. It stayed that way until the bottom of the sixth, when Greg Baselesco and Foley led off with walks. Nahant managed to nail Baselesco at third on a sacrifice attempt, but Nick Davis kept the rally going with a single, and Jack Monesanto’s base hit scored the winning run.Nahant scored “basically with classic small ball,” said Marini. “We only got two hits, and one of them was a bunt.”Marini also singled out catcher Brian Fitzpatrick for his excellent defense.”Al has to throw a lot of balls in the dirt to be effective,” said Marini, “and Brian did a good job of keeping them in front of him. They had the bases loaded in the sixth and I was still calling for splitters.”Nahant plays Thursday against an opponent to be determined.Saugus American 4, Swampscott 1At Pine Hill, the Americans got solo homers from Carl Zabrowski, Steve Lima and Alex Pettenati to pace their attack.”Swampscott is a tough team,” said Americans manager Matthew Jones. “And they played a nice, solid game. So it was good to get a win under our belts.”Saugus American is in Winthrop tonight (5:45) to play Lynn Shore, which returns to the tournament after a year’s absence.Pettenati pitched four innings for Saugus before reaching his 85-pitch limit. Christian DiBerto finished up.”It boiled down to timely hitting, great defense and unbelievable pitching,” Jones said. “We made the plays when it counted.”Swampscott got only two hits, but manager Mike LeBlanc said that pitcher John King did well. Swa