Runner on third, one or fewer outs, sharp grounder hit to third base, runner on third breaks for home, 3B fires to catcher in attempt to get double play, 1)home to get runner heading home from third, then 2) catcher to first to get batter/runner, BUT runner from third does not pass commit line before, during the catcher receiving the throw from third. The catcher then throws out the batter/runner at first. Runner from third then continues past the commit line and scores. You make the call, enjoy.

One out at first and runner is safe at home if no return throw from first baseman before crossing scoring line.

I have an out st first and run scores

Catcher chould have chased the runner back to 3B. However, as F2 I would have gone for the out at 1B.

When I played 3B I would generally chase them to home. Know what your options are when the ball is hit to you.

Wayne 37 I agree, catcher could possibly have gotten the runner on 3rd in a run down but my initial reason for making the post was to gather responses that might show that many players/catchers/seniors "may assume" with the runner heading home that they only need to catch the throw, tag the strike mat for the first out and then try to complete double play at first. But the commit line brings a whole new element into the Sr league play requiring the catcher to be on top of their game (which includes the commit line rule). This also would apply to the 3rd baseman who could check the runners position and delay his throw to the plate until the runner crossed the commit line to get the out and save the run. Runner speed, arm strength of the 3rd baseman all play into this scenario. Appreciate the response and looking to generate more interaction via the message board while this virus hinders our activities.

wayne.. and a smart runner would have waited for the catcher to chase him and then crossed over the line and raced to the scoring plate knowing that he couldn't be tagged

Batter/runner out at first, run scores.

And a smart catcher can beat the runner back to the strike mat. I've done it.

No real issue here. As noted, if the runner is not tagged before he reaches the commit line or the catcher does not touch the plate with the ball in his control before the runner touches the scoring base after passing the commit line, the run scores and the batter is out at first.