What's the call?

[SamNVa]

Since the board is a bit slow I thought I'd throw this play out.

R1 on 2nd, R2 on 1st. BR hits a ball into the gap in right center. R1 collides with F6 who is on her way to cover 2nd base, but gets up and continues. R2 slows at 2nd so as not to overrun R1. Both runners continue to run and round 3rd, with R2 about 10 feet behind R1. At this time, the BR intentionally crashes into F4 who is playing "spectator" about 5 feet behind the baseline. The BR then tries for 3rd and is thrown out on a close play.

What's the call and what happens to the runners?

--Sam