A baseball player for the St. Louis Cardinals stands on the pitcher's mound with his right foot placed firmly on the rubber slab and his left foot in the air. The pitcher is looking behind him, in between first and second base.
This demonstrates the incorrect way that a right handed pitcher should turn when attempting to pick off a baserunner leading off of second base. Here, the pitcher is turning in the opposite way he would if he wanted to throw the baseball to home plate, as he has turned to his right side towards first base. This is incorrect because as soon as the baserunner on second base sees that the pitcher has turned his body to the right towards first base, the baserunner would know that a pickoff throw was coming. However, the pitcher would need to continue turning his body until he could throw the ball to second base, which gives the baserunner ample time to return to the base safely before a throw is even made. However, if the pitcher turned to the left side, then the baserunner would have less time to react because there would be less time between when the baserunner realized a pickoff throw would be attempted and the ball arriving to second base compared to if the pitcher turned to his right side. The pitcher should aim the ball towards second base rather than attempting to throw it to the shortstop as the shortstop should arrive at the base in time to field the pickoff attempt. This saves time and increases the chances of the baserunner being successfully picked off because the shortstop saves valuable time since he is not forced to run towards second base after fielding the baseball.
Terrible condition;
The image is covered in cracks and should be held with extreme caution.
This digital image is made from two separate digital scans; one scan of the lantern slide (reflective); one scan of the image (transparency); the two image were then combined in Photoshop to create the final image.
Lantern slide from the Leslie Mann baseball instruction course, "The Fundamentals of Baseball"