I've shot alot of wrestling shots indoors no flash, with a oly c740 switched to a fz-20.
I am way happier with FZ its more adaptable..can switch on the fly, the oly was too cumbersome in menus...
ISo 400 shutter 1/100- 1/125 , f 2.8 shots are very dark obviously lighten up in PS use neat image to clean up noise. You can also get some shots with lower iso and shutter if you think out a match..when someone is working for a pin the shot can be as exciting as that hip toss..lol check out my photos at http://www.baldwinsvillewrestling.info
go to scoreboard and click on photos..let me know what you think