Borden opened the day with a one-point win, 52-51, over Orleans (13-11) to advance to Saturday’s championship game.
After falling behind 41-35 with 6:11 to play in the game, Borden went on an 9-0 run in just over two minutes to take a 44-41 lead with 3:51 left.
Kirchgessner started the run with a nifty bank shot around the basket and Lynch followed with a shot in the post to make it 41-39. Two Lynch free throws tied the game before a McCoy 3 forced Orleans coach Tom Bradley to call a timeout.
Borden never trailed again, although the Bulldogs cut the gap to one point on three occasions, including a Murphy Wheeler 3-pointer with 4.5 seconds left.
On the ensuing inbounds pass, Bachman throw a football-style pass to a streaking McCoy, who dribbled twice and got pulled the ball back out. He then threw a pass to Kirchgessner, who tossed the ball into the air as time expired.
McCoy led the Braves with 17 points, including seven in the first quarter as Borden ran out to an 11-7 lead.
In the second, four different Braves scored a field goal as they took a 20-16 lead into the half.
Orleans appeared to have taken control with a 20-12 advantage in the third quarter, in which Trey Bradley scored seven of his game-high 23 points.
Kirchgessner finished with 13 points, three assists and three steals, and Lynch added 11 points and four steals in the semifinal win.
Borden went just 14-of-46 from the field, including 3-of-12 from behind the 3-point line, in the win. However, the Braves were 21 for 26 from the charity stripe, compared to 7-of-8 for Orleans.
It was the second one-point win over the Bulldogs this season for Borden. The Braves won at Orleans 37-36 on Jan. 25.
— Greg Mengelt contributed
CLASS A BORDEN REGIONAL
BORDEN 43, BARR-REEVE 42
Borden 9 13 14 7—43
Barr-Reeve 9 14 7 12—42
Borden (22-3): Jalen McCoy 17, Michael Lynch 10, Garrett Vick 6, Josh Vollstedt 4, Billy Kirchgessner 4, Josh Ruedinger 2.
Barr-Reeve (24-2): Micah Bullock 20, Addison Wagler 11, Logan James 6, Heath Graber 3, Jacob Bledsoe 2.
3-point field goals: Borden 6 (McCoy 4, Kirchgessner, Lynch); Barr-Reeve 5 (Bullock 4, James).
Rebounds: Borden 17 (Kirchgessner 5, Vick 5); Barr-Reeve 20 (Bullock 6).
Turnovers: Borden 8; Barr-Reeve 9.
BORDEN 52, ORLEANS 51
Orleans 7 9 20 15—51
Borden 11 9 12 20—52
Orleans (13-11): Trey Bradley 23, Cale Hall 11, Tommy Mitchell 9, Jake Barkley 4, Murphy Wheeler 3, Steven Phillips 2.
Borden (21-3): McCoy 17, Kirchgessner 13, Lynch 11, Vick 7, Ruedinger 2, Cody Bachman 2.
3-point field goals: Orleans 5 (Mitchell 3, Wheeler, Hall); Borden 3 (McCoy 3).
Rebounds: Orleans 18 (Barkley 6); Borden 16 (Vick 4).
Turnovers: Orleans 13, Borden 10.