That would be a 4-3-6-3 Double play. The defense is labeled by numbers as so:
1- Pitcher
2- Catcher
3- First base
4- Second base
5- Third Base
6- Shortstop
7- Left field
8- Center field
9- Right field
The second baseman would be starting the play(4), as the shortstop covers second to cut down the runner coming from first, the second baseman makes the out at first base (3), after the out is make the first baseman tries to make the out at second, with the shortstop covering (6), but as the runner retreats to first the shortstop throws him out, making the last out at first (3). All together, 4-3-6-3. However in most cases, the second baseman's first play should be to second, but as we all know in Baseball things don't always go as planed.
if he interferes with the runner that would be called obstruction
If the first baseman tags first base, the runner originally on first is therefore not forced to second base and he is safe at first.
Yes. Most runner interference calls are made on the runner sliding into the second baseman or shortstop to break up a double play.
No, if there is a runner on first and the second baseman fields the ball and throws it to the shortstop, who muffs the play and allows both the runner and batter to advance/reach safely, the play would be ruled a fielder's choice and an error. It would still count as an at-bat and a non-hit for the batter, just as if the second-baseman had muffed the throw to the first-baseman with nobody on base.
Yes, as long as he does not interfere with the base runner.
Runner is out.
If the runner remains standing on the bag when the 1st baseman touches the bag and the 1st baseman does not tag the runner prior to touching the bag, then the runner is safe and you have no double play. Answer To clarify, once the Batter becomes a batter-runner, the runner at first loses his right to occupy first base and is forced to advance. If he is tagged while standing on the base, he is out. If the first baseman then steps on first base the Batter-runner is also out -- Double Play. BUT, if the first baseman first steps on the base the batter-runner is out and the force is removed. If the runner standing on first base is now tagged he is safe.
Lead runner has the right to the bag as long as they are not being forced ahead by occupants of other bases. If the runner on 3rd was not being forced they can return to the bag and the runner from 2nd must return to 2nd. The runner returning to second if tagged is out and unless the runner returning to 3rd is tagged while off the base then they are safe. If both runner attempt to occupy the base at the same time and fielder tags both runners while they occupy the base the runner from 2nd is out unless they are being forced ahead then the runner from 3rd is out.
second base man- as long as the outfielders throw was decnt and in his range. if not, well the outfielder.
The ump wouldn't call the baserunner out if the fielder kicked the base out from under him, no.
That depends on where the 1st baseman fields the ball. If the 1st baseman can field the ball, throw to second, and have enough time to get safely back to the base to catch the return throw, then (s)he will cover. If not, then it is the responsibility of the pitcher.
if the out would be the third no, it is up to the descrestion of the scorekeeper for example, if there was a runner on third with one out and you bunted the and the third baseman overthrew first, then it would be an rbi, but if the second baseman missed the throw to the first baseman with two outs, then there would be no rbi