Trailing 1-0, Hillsboro did not put a runner on base until Jake Liles led off the fourth inning with a single.
Isaac Leihy reached on an error and Riesen followed with an RBI single. After a strikeout, Alfonse Klenda stroked a two-run single.
Jacob Fish then smashed a 2-2 pitch into the right-center gap, but was thrown out at third base. Klenda scored from first on the play.
Those four runs were all the cushion Riesen needed. The ace hurler did not allow a hit the rest of the way, but Hillsboro tacked on two more runs in the fifth and one more in the sixth.
Beginning with a pair of strikeouts to close out the Lyons third inning, Post 366 booked 13 consecutive outs. Riesen walked the 14th batter on five pitches and went to a full count before notching his ninth strikeout of the game against Lyons? final batter.
Lyons jumped to a 3-0 lead in the second game. Hillsboro scored in the bottom half by working five walks.
Tyler Ediger threw a perfect second inning and Post 366 rained a torrent of singles onto Memorial Field to push eight runs across for a 10-3 lead in the bottom half.
Dylan Liles walked and Jake Liles reached on an error. Leihy followed with a single for the first run of the inning.
Six more singles followed in succession: Riesen singled to load the bases for Ediger, who drove in two runs with a single. Klenda, Jacob Edwards and Fish followed and all three came around to score before the dust settled.
JD Tippin capped the scoring with a drive to right field, but was tagged out trying to stretch the hit into a triple.
Having weathered the storm, Lyons closed the gap to 10-6 in the third and added another run in the top of the fourth.
Klenda then hammered another single and scored on a fielder?s choice by Fish two batters later.
Neither team put a runner on base in the fifth, but two walks turned into two runs for Lyons in the sixth.
The visitors trailed 11-9 entering the final frame, but clubbed two doubles and tied the game in the top half.
The tie was short-lived. Having been hit by a pitch, Fish was at first when Dustin Strunk tagged the 1-1 offering beyond the reach of the Lyons outfield for a walk-off triple.
Peabody?Legion Post 366 played at home against its neighbors on Tuesday and scored 27 runs in 12 innings.
Four consecutive walks brought Calvin Jeffrey around to score and put Hillsboro in a 1-0 hole after the top half of the first inning of the first game.
Post 366 gave Dustin Strunk a 2-1 lead in the bottom half as Jake Liles and Travis Riesen scored.
In the top of the second, walks opened up a big inning for the visitors. Kyle Williams and Matt Thierolf each worked a full count into a free base, and five straight singles resulted in six runs.
Tyler Ladford, Chase Carlson, Zan Fine and Aaron Burnett all tallied hits and runs in the inning.
Peabody pitcher Robbie Dawk?ins helped himself to a 8-2 lead by driving in Fine and Burnett with a 2-out single.
In the home half of the inning, Strunk singled and scored to make it 8-3.
Strunk beaned Thierolf leading off the top of the fourth, and Thierolf scored on consecutive doubles by Ladford and Carlson.
Gavin Serene came on facing Jeffrey and the heart of the Peabody order with no outs and runners on second and third.
He struck out the side, throwing only 10 pitches.
Serene kept rolling, but Hillsboro managed only a double by Alfonse Klenda and a single by Strunk over the next two innings.
Heading into the fifth, the score remained 9-3. JD Tippin opened the home half with a single, Liles followed with a walk and Isaac Leihy clubbed a 2-run triple.
Leihy scored two batters later on a sacrifice fly lofted deep into center field by Klenda, and Post 366 had closed the gap to 9-6.
Jeffrey led off the visitors? sixth with a drive to right field and came around to score.
But trailing 10-6 going into the bottom half, Post 366 turned the tables by scoring 10 runs without recording an out.
Thierolf smacked an RBI triple in the top of the seventh but Hillsboro did not need the bottom half to mark the final score at 16-11.
Serene pitched four innings in relief to get the win. He finished with nine strikeouts over against two hits and two runs.
In the second game, Leihy took the hill for Legion Post 366 and recorded two strikeouts in the top of the first.
Leihy then spotted himself and the home team a 1-0 lead in the bottom of the inning, striking a single and stealing second base ahead of a sharp single by Riesen.
Peabody scored four runs in the top of the second. Thierolf delivered the big hit, a two-run two-out double.
Hillsboro tied it with three runs in the bottom half. Serene walked, advanced on a single by Jared King, and scored on a single by Jake Liles.
Liles and King both scored on an RBI single by Leihy.
Hillsboro?s Jake Martin made it 6-4 in the third, driving in Riesen and Klenda. Post 366 tacked on two more in the fourth as a result of fielding mistakes.
Three more runs came across in the fifth as a result of four hits and a deftly played sacrifice.
Klenda led off with a double and scored on a single by Jake Martin. Strunk followed with a single and Serene executed a sacrifice to score Martin from third. King singled to bring Martin to the plate with the last run either team would score.
Trailing 11-6, Peabody mustered two baserunners against Leihy in the final two innings.
Leihy pitched seven innings with eight strikeouts for the win.
Coming?Post 366 plays home games June 12 against Mound?ridge, June 26 against Herington and July 2 against Hesston.
The June road schedule is as follows: 14 at Abilene, 19 at Chase County, 21 at Peabody and June 28 at Moundridge.
All starts are slated for 6 p.m.