There's a conversation that happens in dugouts across the country after nearly every outing: the pitcher looked sharp — but why did they keep falling behind? Or the flip side: strikes all day, but hard contact kept showing up. What happened?
The answers are in the data. They always have been. The problem has been getting to them fast enough to actually do something about it.
That's exactly what Pitch MetRx was built to solve. When you log pitches live — on a phone or tablet from the dugout — the app calculates your pitcher's stats automatically, pitch by pitch, batter by batter. By the time the final out is recorded, you already have the numbers that tell the real story. No spreadsheets. No manual math. Just a post-game report you can pull up before the team even gets off the field.
Two metrics in particular deserve to be on every coach's radar: First-Pitch Strike percentage (FPS%) and Whiff percentage (WHIFF%). Understanding what they measure and how to act on them is the difference between a post-game conversation that actually changes something and one that fades into "work harder this week."
What first-pitch strike % is really telling you
Most coaches know that throwing a first-pitch strike is good. Fewer think carefully about what that number actually reflects across a full outing.
Pitch MetRx calculates FPS% by tracking the outcome of the very first pitch to every batter faced. A first-pitch strike is recorded any time that pitch results in a called strike, a swing (even a foul), a ball put in play for a hit, or an out. In other words, the metric captures whether your pitcher walked to the rubber and took control of the plate appearance from the first throw.
Here's why it matters so much: when hitters face a first-pitch strike, they're immediately on defense. They can't sit on a fastball at 0-1. They can't take a borderline pitch and feel good about it. Research at every level of the game consistently shows that first-pitch strikes lead to dramatically better outcomes for pitchers — more outs, fewer walks, and a lower batting average against.
Within Pitch MetRx, you'll see FPS% displayed right alongside your pitcher's overall strike percentage and total pitches in the post-game report. A healthy FPS% sits at 60% or better for most pitchers at the competitive level. If your pitcher threw 70% overall strikes but had a 45% FPS%, that's a story worth telling: they were bailing themselves out on pitch two and three, working from behind more than the final numbers suggest.
The practical coaching conversation changes completely when you have this number. Instead of "throw more strikes," you can say "you went first-pitch ball to 12 of 20 batters tonight. Let's talk about what pitch you want to attack with at 0-0."
WHIFF% and the difference between strikeouts and swing-and-miss quality
WHIFF% measures something more specific than strikeouts: it captures how often a hitter swings and completely misses, as a percentage of total swings.
In Pitch MetRx, WHIFF% is calculated per pitch type in the pitch breakdown table of every game report and lifetime summary. The formula counts swing-and-miss divided by total swings (which includes swing-and-miss, fouls, and balls put in play). A K Swinging is counted as a swing-and-miss in this calculation, consistent with how the metric is used at the college and professional levels.
Why does this matter more than just counting strikeouts? Because WHIFF% tells you which pitches are generating genuine swing-and-miss — the kind of deception that doesn't depend on the count, the score, or whether the umpire is generous. A pitcher can have four strikeouts and a low WHIFF% because batters were chasing pitches out of the zone. Another pitcher can have a high WHIFF% on their changeup but only two strikeouts because they didn't throw it enough in two-strike counts.
The pitch breakdown in Pitch MetRx shows WHIFF% side-by-side with strike percentage, BAA (batting average against), and Net Impact for every pitch type your pitcher throws — Fastball Inside, Curveball Middle, Changeup Outside, and so on. Each location variant is tracked individually, so you can see not just which pitch type is working but exactly where in the zone it's most effective.
When you see a WHIFF% above 25% on a specific pitch, that's a weapon. When it's sitting at 5%, that pitch is being put in play with regularity — and that's where the BAA column becomes important to read alongside it.
Reading the post-game report the same day
One of the most powerful aspects of logging pitches in real time is that the feedback loop closes before the game is over. Pitch MetRx generates the full post-game report the moment you end the game — no upload delay, no waiting until you get home to crunch numbers.
The report includes total pitches, strike percentage, FPS%, batters faced, walk count, strikeout count, and a complete pitch-by-pitch breakdown with BAA, SLG%, WHIFF%, Freeze % (called strikes), ground ball/line drive/fly ball splits, and the Net Impact score for each pitch type.
There's also an AI-generated game summary that synthesizes the key themes automatically. It identifies the most effective pitch based on Net Impact, flags any pitch with a BAA below .200 that generated a positive outcome pattern, and writes a plain-language summary of how the outing went. You can read it to your pitcher in the car on the way home.
For coaches who track multiple pitchers, the lifetime statistics and custom reports let you compare FPS% and WHIFF% across the full season, filter by opponent handedness (left-handed vs. right-handed batters), and export everything to PDF or CSV for sharing with parents, players, or college recruiters.
Using the mid-game report to make in-game adjustments
Same-day feedback is valuable. Mid-game feedback is a game-changer.
Pitch MetRx includes a mid-game report that updates automatically after every pitch you log. It's accessible with a tap during a live game — no need to pause tracking, no need to leave the logging screen. The report surfaces the same metrics as the post-game summary: total pitches, strike percentage, FPS%, batters faced, hits, walks, strikeouts, BAA, and the full pitch breakdown with WHIFF%, Freeze %, ground ball/line drive/fly ball splits, and Net Impact for each pitch type. You can also filter the mid-game report by batter handedness on the fly, so if your pitcher is struggling against left-handed batters specifically, that split is one tap away.
The practical use case is straightforward: you're three innings in, and something feels off. Instead of relying on gut feel or memory, you pull up the mid-game report and see that your pitcher's changeup — which was their best pitch in the last two starts — is carrying a 0% WHIFF% and a BAA of .450 through 10 pitches. That's signal. Maybe the release point is off, maybe the batters have seen it enough to lay off it today. Either way, you have a real conversation with your pitcher at the next mound visit instead of a generic "stay aggressive."
Or you look at the first-pitch strike breakdown and see they've been in the strike zone on pitch one for only 38% of their plate appearances in the first two innings. You remind them before the third inning: get ahead early, make hitters put the ball in play on your terms. Then you track whether it changes.
The mid-game report also feeds the same AI summary logic that powers the post-game report — when the game ends and you close out the outing, that analysis is already built on the complete pitch-by-pitch log you've been building in real time. Nothing gets lost, nothing has to be recreated. The data you've been tracking from the first pitch is the data the report runs on.
A practical framework for using these numbers
Here's how to bring FPS% and WHIFF% into your regular coaching workflow using what Pitch MetRx puts in front of you:
Right after the game: Look at FPS% first. If it's below 55%, that's the top conversation to have. Your pitcher spent most of the outing behind in the count, which means they were throwing more pitches, walking more batters, and giving hitters the leverage to sit on what they wanted.
In the pitch breakdown: Find the pitch with the highest WHIFF% and the highest Net Impact. That's the pitch they're winning with right now. Make sure they know it. Confidence is built when pitchers understand exactly which pitch is working and why.
On the low end: Find any pitch with a WHIFF% under 10% and a BAA above .300. That pitch is being hit, and not just weakly. Use the ground ball/fly ball/line drive splits to understand whether it's being hit hard in the air (concerning) or on the ground (more manageable). If it's fly balls and line drives, that pitch needs to come out of two-strike situations until they can improve the shape or location.
Week to week: Pull up the lifetime stats or a custom date-range report and look at the trend lines. A pitcher who is improving their FPS% from 48% to 61% over six weeks is making real progress — and you'll likely see their BAA and walk rate moving in the right direction soon after. That underlying quality compounds over a season.
The value of logging every pitch
None of this analysis is possible without the pitch log. That's the foundation everything else is built on.
Pitch MetRx makes it easy to log pitch type, location, outcome, sub-outcome (called strike, foul, swing-and-miss, ground ball to a hit, etc.), and batter handedness from your phone during the game. You can also log velocity if you're tracking MPH. The app supports pausing and resuming games for doubleheaders, handles relief entries cleanly, and keeps every pitcher's data isolated by account so nothing gets mixed up across your roster.
The payoff is that same-day feedback loop. Your pitcher knows within minutes after the final out how their first-pitch strike percentage landed, which pitch gave hitters the most trouble, and where the AI summary says their command was strongest. That's information they can hold onto and think about before their next bullpen session — not information they wait three days for.
That's what turning live logs into same-day feedback actually looks like in practice. And it starts with showing up to the game ready to track.
Pitch MetRx is a pitching analytics platform built for softball and baseball coaches who want real-time data without the complexity. Log pitches from the dugout, generate post-game reports instantly, and track your pitchers across a full season — all in one place.
Ready to see what your pitcher's numbers look like? Start your free trial today.