Intermediate

Curi Base

Definition

Stolen base adalah kemajuan baserunner ke base berikutnya atas inisiatif mereka sendiri selama pitch, mengandalkan jump yang cepat, membaca release pitcher, dan kecepatan superior dibanding pop time catcher.

Dalam fast-pitch, timing stolen base biasanya berdasarkan release pitcher alih-alih pemisahan tangan (seperti dalam baseball), karena windmill delivery mengungkapkan titik release dengan jelas. Runner membaca tempo dan posisi lengan pitcher untuk mendapat jump ideal. Base path yang lebih pendek (60 kaki) berarti marginnya tipis — break yang terlambat atau pop time catcher yang bagus akan menghasilkan out. Kecepatan, timing jump, dan membaca pitcher adalah tiga faktor yang bisa dikontrol dalam percobaan stolen base.

Beginner tip

Focus on getting your first step to the next base in the exact moment the pitcher's wrist passes the hip. This means that precise timing gives you the maximum legal jump without risking an early-leave call.

Advanced note

Study each opposing pitcher's release tempo from at-bat observations and build a pitch-count mental model of when they tend to work faster versus slower. This means targeting a steal during a slower tempo pitch increases your success probability without changing your own mechanics.

Example

Runner men-timing release pitcher, break dengan sempurna, dan slide ke second lebih dulu dari lemparan catcher dengan setengah langkah.

How it shows up on video

Track the runner's foot lift relative to the pitcher's release frame. This means a legal and well-timed lead shows the first step beginning exactly at release, not a moment before or after. Compare the runner's starting position on stolen-base attempts versus non-steal pitches to see if there is a tip-off in their pre-pitch body position. The catcher's pop time from the receiving film combined with the runner's lead quality and sprint speed determines the outcome margin.

Common mistakes

Leaving the base before the pitcher releases — drawing an out call for leaving early rather than successfully stealing the base
Getting a perfect jump but taking a poor running angle. This adds distance to the 60-foot sprint rather than running the most direct path to the next bag
Stealing against a catcher with elite pop time without adjusting for the increased margin needed in timing and lead quality
Not adjusting the steal plan after a failed attempt. This means using the same lead and timing pattern on a second attempt against the same catcher and pitcher

In SwingVantage Motion Lab

Motion Lab analyzes the runner's departure frame relative to the pitcher's release frame and calculates lead timing efficiency, identifying whether the runner is reliably early, late, or optimally timed.

Frequently asked questions

Kenapa mencuri base dalam fast-pitch lebih sulit dibanding dalam baseball?

Karena base path lebih pendek (60 kaki versus 90), mengurangi waktu yang tersedia untuk lead dan sprint runner, sementara catcher elite dengan pop time di bawah 2,0 detik menghilangkan sebagian besar lead marginal.

Apa itu "green light" dalam pencurian fast-pitch?

Izin coach bagi runner untuk mencuri atas kebijaksanaan mereka sendiri berdasarkan pembacaan mereka terhadap pitcher dan catcher, alih-alih menunggu tanda pencurian tertentu pada setiap pitch.