While an RBI ground out is not a sacrifice, it is still considered a productive out. Furthermore, if the hitter bunted the ball, it would be considered a sacrifice since the batter took purposeful activity to put the ball in play on the ground. Otherwise, this type of play would never get started.
During baseball's early days, players used to use bats made of wood instead of aluminum or steel. A ball hit hard enough to travel far with a wooden bat could do serious damage if it found its way into a player's body. As a result, they had to be careful what they did with their time while at the plate. If they wanted to avoid injury, they had to make sure that they didn't do anything stupid like try to turn a double play by running the ball down. Instead, they'd have to rely on good defense and smart batting to bring them success.
In 1869, Eddard Egan invented the first metal bat. Since then, most bats used by major league players are made from some type of metal or composite material. A ball hit hard enough with a metal bat to go far distance will usually carry risk of injury since there is more energy involved when a player hits with a metal bat. However, since metal bats tend to stay in the yard, they provide more opportunities for extra-base hits.
The hitter must be called out at first base or would have been if an error or fielder's choice had not happened. In other words, if a hitter bunts the ball with the sole purpose of advancing a runner but is still able to reach first base safely, there is no sacrifice bunt.
Anonymous A sacrifice hit (also known as a sacrifice bunt and abbreviated SH) is given to a batter who successfully advances one or more runners by bunting the ball for an out, or who would have been out but for an error or unsuccessful fielder's choice. A sacrifice does not count as at bat time.
In principle, a player who hits a sac fly is just attempting to lift the ball to the outfield in order to advance the runner, foregoing his opportunity at a hit in the process. A sacrifice bunt is similar in that the player may earn a hit but decides to advance the runner to a better scoring position instead.
Wiki is the answer. Because it is considerably more difficult to execute a good bunt than it is to hit a fly ball out, a bunt that advances runners even without scoring a run is considered a SAC whereas a fly out that advances runners without scoring a run is not. Because of the rules' balance, it's considerably more difficult.
Bunt's Sacrifice The primary idea behind scoring a sac is that the batter bunts and advances one or more runners while being thrown out at first base. However, if the scorer believes the hitter was attempting to bunt for a hit, the at bat should be charged instead of the sac.
In addition, there are two situations where a runner may score from third base on a sac: when he reaches first before the pitcher begins his delivery from the stretch, and when he reaches first after the pitcher has completed his delivery but before the catcher returns him to third. These are called "legal scores". A legal score allows the batter to escape an inning with only a baserunner left standing.
An illegal score would occur, for example, if a runner reached first base during a play at second base. In this case, the batter would be awarded a base on balls because he had interfered with a fielder's attempt to make a catch.
Finally, there is one situation where a runner can score from second base without being touched by the ball or a player: when a double play is entered before the batter reaches first base. In this case, the runner can advance freely because no out is necessary to retire the batter.
Examples of legal scores from third base include: Runner on third with none out and one batter remaining.