re: Ruling on SELA catcher tossing ball to his dugout

The ball becomes dead once it crosses the point that was discussed in the ground rules meeting before the game and I do not know what that point is in regards to SLU's field. That play last night is just like throwing a ball from SS into the first base dugout. The home plate umpire nor any of the two base umpires killed the play. As weird as it looked SLU's catcher just went brain dead.