Grapevine coach Tim McCune had to do a little research, but when he did, he found that his 2013 baseball team made some history.The Mustangs (23-8-1, 13-1 in District 6-5A) won their first outright district championship since 1993. There have been some co-championship seasons, including 1992, 1996, 1998, 2001 and 2002. But there is something more meaningful when a team wins a title without having to share it.“It was a big goal for our kids,” McCune said. “Two of the more successful seasons we’ve ever had has been when we were the runner up in the district. Most of the time, we’ve just been making sure that we’re a playoff team.”Grapevine opens the Class 5A Region I playoffs with a bi-district series against Hebron. Game 1 is at 7 p.m. Thursday at Grapevine. Game 2 is at 7 p.m. Friday at Hebron. If necessary, Game 3 is at noon Saturday at Northwest Byron Nelson.Winning a district championship is not easy. Any coach recognizes that it is hard to maintain a consistent level of play for the better part of seven or eight weeks. However, the Mustangs overwhelmed the rest of the district with a deep pitching staff led by Cooper Hess and Zach Kornely.Grapevine’s pitching staff threw six shutouts and allowed 12 runs in 14 games in district play. The only loss was a nine-inning 4-3 setback to runner-up Colleyville Heritage. Defensively, the Mustangs committed only 14 errors in 14 games. That’s a far different story than the first part of the season when they committed 34 errors in the first 11 games.“We pitched extremely well, and we’ve played great defense,” McCune said. “Obviously, when you do that, you’re going to keep yourself in every game. That’s why we’ve won a couple of 1-0 games and a 2-0 game.”Colleyville Heritage setThe Panthers (19-11, 12-2 in 6-5A) enter into the bi-district playoffs maybe a little more than under the radar. They are the second seed.They have made the playoffs in each of coach Alan McDougal’s first eight years. But this time, they begin without eclipsing 20 wins. Usually, they’re beyond that mark. This team had to grind.“Maybe we can get [to 20 wins] this weekend,” McDougal said. “Right now, we’re swinging the bat as well as we have all season. Hitting five home runs against [Hurst] L.D. Bell was a good way to end the season.“We’ve struggled on defense, and everybody knows that our pitching has been the way to look at our team. But we’ve made progress.”Colleyville Heritage opens the bi-district playoffs against Coppell. Game 1 is at 7 p.m. Wednesday. Game 2 is at 7 p.m. Friday at Colleyville Heritage. If necessary, Game 3 is at 1 p.m. Saturday at Colleyville Heritage.McDougal knows that he will open the playoffs with Lane Norwood. However, the rest of the pitching plan for the series depends on how the opener goes.One move that seems to be paying off is when McDougal moved senior outfielder Cody Thomas to the leadoff spot. McDougal put him there and kept him there since the fifth district game.“He’s taken off there,” McDougal said. “It puts some pressure on the lower guys in our lineup but there’s also pressure on the opponents to throw him a good pitch. At No. 1, he has the most chances to hit.”Thomas has 13 home runs and 45 RBIs. McDougal also credits a surge in the lineup by No .5 hitter Jordan Adams and No. 7 hitter Corey Althouse.