Statistics currently measured by MatchPro:*

Category Metric name Formula Description

Points statistics

Total points won% Points won / Total points played  
Total winners Number of winners including return winners and aces won by a player Winner definition: a forcing shot that cannot be reached by the opponent and the player wins the point
Total forced errors Forced errors committed by a player Forced error: when an opponent hits a difficult shot that causes the player to miss
Total unforced errors Unforced errors committed by a player Unforced error: an error that cannot be attributed to any factor other than poor judgment and execution by the player.
Aggressive margin (Winners + opponent's forced errors - unforced errors) / total points played It's the percentage of points won using the player's own "strengths" (winners + opponent's forced errors) minus the percentage of points lost by unforced errors.
A positive value indicates an aggressive player, who wins points using his or her own strengths. A negative value indicates a player who loses because of his or her own mistakes.

Shot placement statistics

Winners  placement percentage (Net / No man's land / Baseline) Winners at the net (or no man's land or baseline) divided by total winners for a particular player (in percentages). It includes return winners and aces (which are by default winners from the baseline)
Top 3 winners Top 3 winner shots sorted by number of winner points for each player. Shots are only counted if there are two or more of the same kind recorded as winners (e.g winning with the volley only once will not trigger a winner shot, yet winning with the overhead twice could count the overhead as one of your top shots)
Points won at net % Percentage of points won during a net approach, out of total points ended at the net by a player. See "General note on net approaches"
Forced errors percentage (Net / No man's land / Baseline) Forced errors at the net (or no man's land or baseline) divided by total forced errors for a player (in percentages).  
Top 3 forced errors Top 3 forced errors, sorted by number of forced error points for each player. Shots are only counted if there are two or more of the same kind recorded as forced errors.
Unforced errors percentage (Net / No man's land / Baseline) Unforced errors at the net (or no man's land or baseline) divided by total unforced errors for a player (in percentages).  
Top 3 unforced errors Top 3 unforced errors, sorted by number of unforced error points for each player. Shots are only counted if there are two or more of the same kind recorded as unforced errors.
Serves statistics 1st serve % Number of first serves, which were considered "in", divided by total number of first serves available. Includes aces.
1st serve won % Number of points won on first serve, divided by total number of first serves available. Includes aces. This metric is always less or equal than the 1st serve %.
2nd serve % Number of second serves which were considered "in", divided by total number of second serves available. Includes aces.
2nd serve won % Number of points won on second serve, divided by total number of second serves available. Includes aces. This metric is always less or equal than the 2nd serve %.
Double faults   Recorded as unforced error from the baseline.
Aces   Recorded as winner from the baseline.
First serve placement stats First serve "in" percentage (Wide / Body / T) Total first serves "in" placed wide (or body or "T") divided by total first serves "in"  
First serve "ace" percentage (Wide / Body / T) Total first serves "ace" placed wide (or body or "T") divided by total first serves "ace"  
First serve "net" percentage (Wide / Body / T) Total first serves "net" placed wide (or body or "T") divided by total first serves "net"  
First serve "out" percentage (Wide / Body / T) Total first serves "out" placed wide (or body or "T") divided by total first serves "out"  
Second serve placement stats Second serve "in" percentage (Wide / Body / T) Total second serves "in" placed wide (or body or "T") divided by total second serves "in"  
Second serve "ace" percentage (Wide / Body / T) Total second serves "ace" placed wide (or body or "T") divided by total second serves "ace"  
Second serve "net" percentage (Wide / Body / T) Total second serves "net" placed wide (or body or "T") divided by total second serves "net"  
Second serve "out" percentage (Wide / Body / T) Total second serves "out" placed wide (or body or "T") divided by total second serves "out"  
Return statistics Total return winners Number of return winners by player. Return winner: a winner shot played directly from the return. The server cannot reach it and thus the receiver wins.
Receiving points won percentage Number of receiving points won by a player, divided by total number of points when the player was receiving.  
Break points converted Number of breakpoints won divided by total number of break points played.  
Break games converted Number of breaks won (equal to number of breakpoints won) divided by total number of return games when a player had at least a break chance. Break games converted shows more clearly if a receiver has recovered after a lost breakpoint or not. Consider 0-40 in a game. The receiver loses the first breakpoint (score is now 15-40), but wins the next one, winning a break.
Break points converted is 1/3=33%, while break games converted is 1/1 = 100%. The receiver did not miss his chance to win the break.


General note on net approaches

MatchPro records how a point has started (with a 1st or 2nd serve) and how it has ended. Due to the fast succession of events it cannot allow the user to record any other events between the start and the end of a point. Therefore, net approaches are only recorded if the user ends the point at the net through his or her own power and / or mistake. If a player approaches the net, but is forced back to the baseline by the opponent, then the app user should not record a net approach.


*for app version currently on AppStore and current published version of this website.
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