保送率
Also known as: BB%, 四坏球率, 保送百分比
保送率（BB%）是指打者的打席中以保送结束的百分比——反映打击纪律、球种识别能力，以及利用投手失控的能力。
保送率 = 保送数 / 打席数。职业水平的联盟平均保送率通常在8%-9%之间；超过12%属于优秀水平；低于6%则明显低于平均水平。高保送率表明打者能守住好球区、放过边缘球，并迫使投手投好球。对于长打能力不算突出的球员而言，保送率尤其有价值，因为它能在不需要额外垒打接触的情况下提高上垒率。从投手角度看，它也是判断投手控球问题的可靠指标。
In your next 10 at-bats, commit to taking the first pitch regardless of location and observe how pitchers respond. This means you will collect valuable pitcher-tendency data and begin training the patience habit that supports higher walk rates.
Review the counts at which your walk attempts end. This means if you walk most often on 3-2 counts but rarely on 3-1, you are protecting the zone too aggressively on 3-1 where a strike is likely to be thrown. The aggressive swing decision on 3-1 hittable pitches and patient discipline on 3-2 borderline pitches is the advanced walk-rate optimization pattern.
Example
她13%的保送率反映出有纪律的区域管理——即便在球数落后时，她也拒绝追打好球区下方的变化球。
How it shows up on video
On video, high walk rate mechanics are visible as confident, decisive takes on pitches outside the zone without any muscle tension or false-start movements that indicate uncertainty. Common errors that suppress walk rate include an early weight shift toward the pitcher that commits the hitter to swing before the pitch is readable, a tension in the hands and arms at the load position that prevents clean check-swings on borderline pitches. A batting stance that is too far off the plate. This means forcing the hitter to reach for pitches on the outer half and swing at what should be obvious balls.
Common mistakes
- Expanding the zone on pitchers who have been reliably wild. This means a 3-2 count against a pitcher who has walked four hitters is a situation where the patient approach is most powerful, yet many hitters expand and swing at balls
- Using the walk rate target as a reason to take pitches in the heart of the strike zone early in counts, confusing discipline (taking balls) with passivity (taking meatballs)
- Not communicating in team contexts when a pitcher is clearly struggling with control. This means the individual walk benefit is multiplied when the entire lineup works the count rather than swinging early
- Confusing a low walk rate with poor plate discipline without checking whether the hitter is swinging at strikes efficiently. This means a hitter who swings at nearly all pitches but only at strikes will have a low walk rate but excellent plate discipline
In SwingVantage Motion Lab
SwingVantage tracks the zone location of every pitch the hitter takes (does not swing at) and identifies whether takes on out-of-zone pitches are accompanied by appropriate non-swing body language or whether they reveal uncertainty. This means a take with a flinching start-of-swing is a different cognitive state than a confident passive take. They require different training interventions.
Related terms
Related guides & benchmarks
Put this into your swing
SwingVantage can spot this in your own swing — free to start.
See a sample Baseball report first