Post 114 rotated three pitchers and substituted liberally as they were playing with their first full roster in a number of games.
"We're playing a select team out of southern Illinois, but that was still our plan going in," said Sikeston coach Charlie Dye. "I was pleased with the way we played with them. We didn't do anything to embarrass ourselves."
Sikeston took a 1-0 lead in the bottom of the second inning on an RBI-single by Joey Bickings to bring home Matt Smith.
The Bullets took the lead with two runs in the top of the third on a single by Broadway.
Sikeston tied the game at 2-2 in the bottom of the third on a run-scoring single by Lance Rhodes.
Southern Illinois took the lead for good in the fourth with four runs.
Sikeston (6-4) cut the lead to 6-3 on a run-scoring double by Josh Miller, but Southern Illinois scored two more runs to lead 8-3.
John Robert Bizzell tripled and scored on Ross Merideth's single to reach the final margin.
"We've had some kids that have been gone for a while and we needed to get them some playing time and we needed some pitchers that needed some work," said Dye.
"You never like to lose but we got several things accomplished tonight that we were trying to get accomplished."
Jordan Penn was saddled with the loss as he threw two innings. He allowed six runs and five hits.
"There's no telling how long it's been since he's been on the mound," said Dye.
"We have to have him later in the year. The biggest thing tonight is he'd get the first two out and it didn't seem like he could shut the door. But that's from not being on the mound in a while."
Ross Merideth threw came in for relief and threw four scoreless innings, allowing three walks and two hits. He struck out five.
Jordan Kimball started and threw three innings. He allowed five hits and two runs with a walk.
Sikeston collected 10 hits in the game but they stranded 11 base runners.
Lance Rhodes was the only player with two hits. Matt Smith and Josh Miller each had doubles.
Dye said he was just happy to get his players in that haven't been with the team in a while.
"They got in and got their work in," said Dye. "They haven't played in a while and haven't seen any pitching. They ran three good pitchers out at us and it was time for them to start getting back in the swing of things."
Sikeston will play at Marshall County (Ky.) at 6 p.m. today.