AS of Jan. 1st  2014 The following is in Effect.

THE RULE IS NOW CALLED - A NO CONTACT RULE

There is no more must slide rule. A runner must do one of the following

1- SLIDE

2-AVOID

3-GIVE THEMSELVES UP

They cannot have contact with the fielder.

EXCEPTION

If a throw is up the line and draws the fielder into the base and the players run into each other  no call will be made as long as the runner does not lower his or her shoulder.