batter/runner unintentionally kicks blocked pitch

[HoopsRefJunior]

What's the ruling?

--Batter swings and misses at pitch that bounces for strike three with two outs.
--Batter/runner takes off toward first base
--Catcher successfully blocks the bounced pitch, but the ricochet off his gear pops into the stride of the running batter/runner
--The ricochet is unintentionally kicked out into the infield grass by the batter/runner
--The defensive pitcher and first baseman are unable to successfully field the ball.
--Runner arrives at first base safely.

The ruling at this game was SAFE. No penalty. Were they correct?

Can someone provide a case play that covers this sitch?

This was a 1-1 game at the time. Two batters later, a 3-run blast. Now 4-1.