As players get older and play at higher and higher levels of baseball, keeping runners out of scoring position is even more crucial than at younger ages. This is true because as players get older they typically make less errors and pitchers throw more strikes, thus reducing the number of runs scored. Scoring is at a premium and thus preventing extra bases is as well. One way pitchers can help themselves and their time is by developing an effective pickoff move to first.
Right handed pitchers here in the Greater Toronto Area - and likely just about anywhere they play baseball - typically come equipped with the basic step off the rubber method. This is where the pitcher disengages the rubber with their back foot and throws to first. This is a great move to learn as one's first move as it is relatively safe and simple and every once in a while just might catch a sleepy baserunner off guard. The problem however is at higher levels this move is just not that effective anymore. As the back foot comes off the rubber it provides baserunners with too much time to recognize the pick off. In some cases pitchers might even step off and not throw as the runner is already back to the bag. This completely defeats the purpose of the pick off, which is to hold the runner close, decreasing their jump and chances of reaching scoring position.