リードオフ(塁からのリード)
Also known as: プライマリーリード, リード, 歩きながらのリード
リードオフとは、投球前に走者がベースから取る距離のことで、リード距離を最大化することで、牽制のリスクを管理しながら次の塁までの距離を縮められる。
プライマリーリードは、投手がセットに入ってから投球までの間に取られる。標準的なプライマリーリードは3〜4歩、あるいはベースからおよそ9〜12フィートだ。リードは、できるだけ遠くまで行くことと、牽制球に対して安全に帰塁できることとの妥協点だ。優れたファーストステップの速さや投手の読みに長けた走者は、より長いリードを取ることができる。一塁では、リードの角度も重要になる。ファウルゾーン側でリードを取ると、二塁への走塁角度が良くなる。プライマリーリードの質が、その後のすべての土台になる。
Start with a conservative 8-9 foot primary lead and focus on reading the pitcher's first movement before expanding. This means developing a reliable return mechanism before extending the lead is more valuable than maximum distance from a position you cannot safely hold.
Chart the specific pickoff move time of each pitcher in your scouting data and calibrate your maximum safe lead distance before the game starts rather than testing it reactively during at-bats. This means a pre-calculated maximum lead allows you to take the ideal distance confidently rather than incrementally guessing.
Example
彼は左投手の高いレッグキックを盗塁のゴーサインと読み、一塁からのプライマリーリードを12フィートまで広げた。
How it shows up on video
On video, lead quality is evaluated by measuring the distance from the lead foot to the bag and the body's weight distribution at the end of the lead shuffle. Common errors include a weight-backward lean at the end of the lead (putting the runner in a return posture rather than a neutral posture that can go either way), a lead that drifts toward second base during the lead shuffle rather than remaining parallel to the baseline (telegraphing steal intent to the pitcher), and feet that are too close together at the end of the lead (reducing the crossover step explosiveness available for the secondary lead or steal break).
Common mistakes
- Leaning toward second base at the end of the primary lead. This telegraphs steal intent to the pitcher and first baseman and invites an immediate pickoff attempt
- Taking the same primary lead distance against all pitchers regardless of pickoff tendency or arm strength. This means a pitcher with a quick move and fast pickoff arm requires a more conservative lead than a pitcher with a slow move and high leg kick
- Crossing the feet during the lead shuffle rather than using a push-and-drag shuffle that keeps the feet parallel — crossed feet sharply reduce return-to-bag speed
- Establishing the primary lead in fair territory directly toward second base rather than in foul territory. This gives up the directional return advantage that foul-territory leads provide on difficult pickoff throws
In SwingVantage Motion Lab
SwingVantage measures lead distance, lead angle relative to the baseline, and body weight distribution at the end of the primary lead. This provides a comprehensive lead profile that can be compared against contextual benchmarks for different pitcher types. The system identifies leads that are either too conservative for the pitcher's pickoff tendency or too aggressive relative to the runner's measured return quickness.
Related terms
Related guides & benchmarks
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