Class 2A semi-final volleyball action highlighted the local sports scene Tuesday night. At the Mercer County Regional, Knoxville stopped the host Golden Eagles in straight games, 25-19, 25-21. In the other semi-final Bureau Valley upset the higher seed United Red Storm 16-25, 25-22, 25-23. At the Orion Regional the host Chargers topped Alleman 25-22, 25-12 and the Rockridge Rockets handled Riverdale 25-22, 25-16. Those semi-final winners will meet Thursday night for the right to advance to sectional play on Monday.