Yes it is Fed rule also. In case book, Infractions by pitcher 6.2.4 Situation A: "With R1 on thrid and R2 on first, F1 stretches and comes set. He then swings his entire nonpivot foot behind the back edge of the pitchers plate, steps toward second and (a) throws the ball to sencond in an attempt to retire R2, who is advancing there or (b) feints throw to second to drive back R2 back to first, who has neither attempted nor feinted an advance to second. RULING: In (a) , this is legal. In (b), it is a balk.