Arlington Seguin beat Lancaster 38-32 last week, moving the Cougars to 2-1 in District 15-4A play, tied for second with Mansfield Summit.It also put them in a solid position for a playoff spot.That’s a turnaround from last year when Seguin finished 3-7 and 2-5 in district. Lancaster, which reached a 2012 state championship game, won the district last season. “We were in the bottom half of the district coming in from last year,” Seguin coach Carlos Lynn said. “We’ve worked hard to get ourselves in the position we’re in.”Seguin’s remaining schedule includes undefeated Mansfield Legacy and Red Oak. Both are in contention for one of the district’s four playoff spots. But first, the Cougars have Waxahachie (1-4, 0-3) this week. “We don’t care if it’s a team that’s 0-6 or 6-0. Our approach is the same,” Lynn said. “We have a faceless opponent every week.”Jaguars stay in hunt Mansfield Summit (2-4 overall) has positioned itself at 2-1 in District 15-4A after a 35-28 win last week against Mansfield Lake Ridge. Summit seems to have an affinity for close games, clinching last Friday’s win after recovering a Lake Ridge fumble on the 12-yard-line with two minutes left. The Jaguars lost 29-28 to Seguin two weeks ago and beat Waxahachie 38-34 on Sept. 27. “I think we have a football team that has a lot of potential,” Summit coach Travis Pride said. “I certainly don’t think we’ve peaked yet. Every game we’ve had has been close. Every game we have left will be close.”Lake Worth playoffsLake Worth’s preparation last week might not have been as smooth as coach Tal Sanders would have liked, but the Bullfrogs still cruised to a 60-7 win over Fort Worth Diamond Hill-Jarvis. “It was a tough week of practice [last week],” Sanders said. “It was hard to get them focused.”The Bullfrogs could inch closer to a playoff berth this week against Mineral Wells (0-6, 0-1). Because of the six-team district, a 2-0 start would likely secure a spot in the postseason for Lake Worth.“It’s all or nothing for Mineral Wells,” Sanders said. “So I’m sure we’re about to see everything they’ve got.”Defense stands tallWhen the offense wasn’t clicking, Colleyville Heritage got the spark it needed on defense.In a 24-10 win over Irving MacArthur, Panthers safety Ryan Phillippe had two interceptions, one returned for a touchdown. Jared Vallilee also had an interception, and the Panthers recovered a MacArthur fumble. “On a night when the offense struggles, it’s great to see our defense be able to step it up,” Heritage coach Mike Fuller said.The win moved Heritage to 4-2 overall and 2-1 in District 6-5A. The Panthers play Irving on Thursday, and Fuller will be looking for more production from his offense, which was outgained by MacArthur 208-129. “Offensively, we’ve got to be more consistent,” Fuller said. “We’re making too many silly, silly mistakes. It’s hurting us.”Voting continuesBe sure to check out the fan vote for Player of the Week at dfwVarsity.com. The winner will be revealed in Thursday’s section.