LoL Esports Enhancer от Victor Otieno

The extension provides the following features:
1. Hides spoilers on the schedule page
2. Adds option to move the stats sidebar to the right while watching vods.
3. Optional announcer voice during matches (live or vod)*

To activate the announcers, click on the extension icon. That'll take you to the settings page.
During a live match or vod, you can choose which team will be recognised as the ally team by clicking on the team name displayed on top of the stats.

*Currently only tested with normal vods. It should work with live matches but there's no guarantee.
IT DOES NOT WORK WITH PRO-VIEW (vods or live)

The Announcers available are: classic, star guardian, bilgewater, project and dark star

The languages available for each announcer:
English
Korean
Japanese
Chinese (Not available for Dark Star)
Portuguese
German
Spanish (LAN/LAS)
Spanish (Spain)
Turkish
French
Italian
Hungarian
Polish
Russian
Romanian
Czech
Greek

LoL Esports Enhancer isn’t endorsed by Riot Games and doesn’t reflect the views or opinions of Riot Games or anyone officially involved in producing or managing League of Legends. League of Legends and Riot Games are trademarks or registered trademarks of Riot Games, Inc. League of Legends © Riot Games, Inc.