Stat Glossary

Every abbreviation you'll meet across the stats tables, the match page and the leaderboards — with a precise meaning and a plain, everyday explanation. Use it as a reference; you don't need to read it end to end.

Most stats are percentages, and turning on Show breakdown reveals the raw counts behind each one (see Reading Stats & Filters).

Serve & return core

These are the headline stats on the match page and the leaderboards.

Abbrev	Full name	What it means	Plain explanation
SH	Service Hold %	Share of the player's own service games that they win.	How often this player wins the games they serve. Higher = harder to break.
SPW	Service Points Won %	All points won while serving.	Out of every point on their serve, how many they win.
RPW	Return Points Won %	Points won when receiving the opponent's serve.	How often they win a point on the other player's serve.
BPS	Break Points Saved %	Of break points faced on serve, the share saved.	When they're in danger of being broken, how often they wriggle out of it.
BPW	Break Points Won %	Of break points earned on the opponent's serve, the share converted.	When they get a chance to break, how often they take it.
OpH	Opponent Hold %	How often this player's opponents hold serve. Good when low.	How often the other players manage to hold serve against them — a low number is good.
FS	First Serve %	Share of serves landing in as a first serve.	How often their first serve goes in.
FSPW	1st Serve Points Won %	Points won when the first serve is in.	When their first serve lands, how often they win the point.
SSPW	2nd Serve Points Won %	Points won on the second serve.	How well they cope on their weaker second serve.

Set-pattern & scenario stats

These capture what happens at key moments — closing sets out, coming back, holding under pressure. They power the strategy tags.

Code	What it means	Plain explanation
`rgw`	Return games won (breaks achieved).	How often they break the opponent's serve.
`tb`	Tie-breaks won.	How they do in sudden-death tie-break sets.
`bfsg`	Broken in their first service game of a set.	How often they get off to a bad start on serve.
`babb` (BaBB)	After being broken, breaks straight back before the set ends.	When they lose their serve, how often they hit straight back.
`fbos`	Gets the first break of serve.	How often they land the first break — grabbing early momentum.
`ibbab`	Immediately broken back after breaking.	After breaking, how often they hand it straight back.
`hs54`	Holds serve when serving at 5-4.	How well they serve out a set when in front.
`bs54ls`	Broken serving at 5-4 and then loses the set.	How often a blown chance to serve out costs them the set.
`hstws`	Holds serve when it would win the set.	How reliably they serve out a set they're about to win.
`hstss`	Holds serve when a loss would lose the set.	How well they serve to stay alive in a set.
`winset1` (WFS)	Wins the opening set.	How often they take the first set.
`ws1w2s` (WS1W2S)	Wins set 1 then wins in straight sets.	After taking set 1, how often they finish the job quickly.
`ws1wm`	Wins set 1 and wins the match.	After taking set 1, how often they go on to win.
`ls1ws2` (LS1WS2)	Loses set 1, wins set 2.	After dropping the first set, how often they hit back to take the second.
`ls1wm`	Loses set 1 but wins the match.	How often they come from a set down to win.
`ls1gfbs2` (LS1FBS2)	Loses set 1, gets the first break of set 2.	After losing set 1, how often they strike first in the second.
`bfs2ws1`	Wins set 1 then broken first in set 2.	After winning set 1, how often they let the opponent back in early.
`ls1bfs2ws2` (LS1BFS2WS2)	Loses set 1, broken first in set 2, still wins set 2.	A deep fightback — behind and broken, yet still takes the set.
`ls1bfs2bb` (LS1BFS2BB)	Loses set 1, broken first in set 2, breaks back.	Same tough spot, measured by whether they claw the break back.
`bg1s2`	Wins set 1, serves first in set 2, broken in game 1.	A specific slow start right after taking the lead.
`ws1w3s`	Wins set 1, loses set 2, wins the decider.	Holds on to win after being pegged to a third set.
`ws2w3s`	Loses set 1, wins set 2, wins the decider.	Comes from behind and closes it out in three.
`bbbbeos`	Breaks, then broken back before the set ends.	Swingy serve battles that don't stay settled.
`bbbbeos3`	Same break-and-broken-back pattern, in the deciding set.	The same swings in the pressure of a final set.
`bbbeos3`	In set 3, broken first but breaks back.	Resilience when it matters most.

First / second serve detail (match-page report)

Code	What it means	Plain explanation
`firstservepercentage`	First serves in out of total serve points.	How reliably their first serve finds the box.
`firstservepointswon`	First-serve points won.	How much damage their first serve does.
`secondservepercentage`	Second serves in play.	How safe their second serve is.
`secondservepointswon`	Second-serve points won.	How they fare on the weaker second ball.
`totalservepointswon`	All serve points won.	Overall serve strength (same family as SPW).

The four strategies

The home list can flag matches that fit a trading pattern. See Reading Stats & Filters for how to turn them on.

Filter code	Name	Plain idea
`bts`	Back The Server	This player's serve is strong right now, so their service games are hard to break.
`ltl`	Lay The Leader	Leads in these matches often don't hold up — the player in front can get pulled back.
`ls1`	Lay Set 1 Winner	Winning the first set here doesn't guarantee the match — the set-1 winner is beatable.
`swtr`	Swing Trading	Momentum flips a lot in matches like this — good for trading the ups and downs.

Rankings, odds & identity fields

Field	Where	Meaning
# / O / Official	Leaderboards, match page, player page	The official published world ranking.
TP# / TP Ranking / S	Leaderboards, filters, match/player page	Our own rating; the surface version (`S`) is per court type.
TP Score	Leaderboards	The score behind the TP ranking.
Highest Career Rank	Player page	The best official rank the player has ever reached.
Loc	Leaderboards	Nationality (3-letter country).
L/R	Leaderboards, filters	Handedness — left- or right-handed.
Odds / Price	Match list, match page, player info line	Decimal odds; lower = favourite.
W / L / % / ROI	Records blocks, leaderboards	Wins, losses, win percentage, and return on investment over the selected timeframe.

For Predicted Holds and how the +/- comparison and colours work, see Match Page and Reading Stats & Filters.

A good place to start as a beginner: learn SH, SPW, RPW and BPW first — they describe most of a player's serve-and-return strength. The rest add detail once you're comfortable.

Tips & Tricks

Hover any stat on the site for a quick one-line definition — this glossary is the fuller reference.
Pair serve and return stats: SH/SPW tell you how a player serves; RPW/BPW tell you how they return. Together they describe most of a match.
Watch the sample size. Turn on Show breakdown; a big denominator means the percentage is more reliable.
"Good when low" stats read backwards — for OpH, lower is better, and the colours flip to match.

Note — the strategy plain-idea lines are guidance, not a tip to place a bet. They describe the pattern each strategy looks for.

FAQ

What does BP Saved vs BP Won mean? BP Saved (BPS) is escaping break points on your own serve; BP Won (BPW) is converting break points on the opponent's serve.

What is "Opp Hold" and why is a low number good? It's how often opponents hold serve against this player. Low means the player breaks a lot — so a low number is good, and the colours flip to show that.

What counts as a "hold" — a game or a point? A game. Service Hold is about winning the whole service game; point-level stats (SPW, RPW) count individual points.

What are the four strategy names and what idea does each fit? Back The Server, Lay The Leader, Lay Set 1 Winner and Swing Trading — see the strategies table above for the plain idea behind each.

Which stats matter most for a beginner to learn first? SH, SPW, RPW and BPW. They cover most of a player's serve-and-return strength.