Sebastien Grosjean

Against an average opponent

Serve and return points won, refitted against every opponent at once so a record built on weak or strong opposition is put on the same scale. Career, all surfaces, with a 90% margin. Raw is the plain share of points won.

Value per 100 shots

Points gained per 100 shots compared with an average tour player in the same position, adjusted for the strength of the opponents faced, with a 90% margin (shots clustered by match). Raw is before the opponent adjustment. Built on 7,094 shots.

Shot expected value

The share of points Sebastien Grosjean goes on to win after each option in the positions they face most often, shrunk toward tour average when the sample is small. Showing the 8 most-used options; teal marks the best one with at least 30 shots.

Serve under pressure

Pressure predictability index −6 How much less varied Sebastien Grosjean's first-serve direction gets on break points. Positive means easier to read. Based on 132 break-point first serves.

Is the serve mix in equilibrium?

Game theory says a well-mixed server wins equally often with every direction they use. If one direction wins more, it's underused and points are being left behind. This is the minimax test Walker and Wooders ran on Wimbledon finals, applied to every charted first serve. Win rates include faults. "Optimal" allows for returners reading a habit. No measurable response (−0.05 ± 0.15 points per 100 serves for every 10 points of habitual usage), measured from ATP servers whose mix drifted between matches. Shifts stay within the range servers' habits actually vary, the only range that response was measured over.

Exploitability 0.46 points per 100 first serves What the optimal mix would win over the current one, both courts. More exploitable than 100% of ATP servers. Tested on matches they weren't fitted on, ATP mixes picked this way win 0.33 per 100 first serves on average.

Repeating the previous direction to the same court: +2.3±3.9 points per 100 against switching. Negative means returners read repeats. Tour-wide, repeating costs women about 0.4 points per 100 and costs men nothing, so men's returners don't measurably anticipate direction. (579 repeats, 748 switches.)

Return by serve direction

Return points won against each serve direction, compared with the tour average.

Signature patterns

Recurring sequences that win more than Sebastien Grosjean's own baseline, ranked by edge weighted by how often they're used.

Discovered sequences

Mined from every me → opponent → me run of three shots, with no templates. Ranked by how much more often Sebastien Grosjean wins the point once the sequence happens, weighted by how often it happens. Think of them as chess openings.

1. FH crosscourt → FH through the middle → FH down the line used 0.4% · won 49% · +4.9±12.9 vs own baseline · +3.2 vs tour on the same sequence
2. BH slice crosscourt → BH crosscourt → BH crosscourt used 0.4% · won 49% · +4.9±12.9 vs own baseline · +10.2 vs tour on the same sequence Disrupted by Arnaud Clement (3/6)
3. FH down the line → BH crosscourt → BH crosscourt used 1.1% · won 46% · +2.3±10.1 vs own baseline · −1.4 vs tour on the same sequence Disrupted by Arnaud Clement (7/9)
4. BH through the middle → FH down the line → BH through the middle used 0.4% · won 47% · +3.6±13.0 vs own baseline · +10.1 vs tour on the same sequence
5. FH down the line → BH crosscourt → BH through the middle used 0.6% · won 47% · +2.7±12.2 vs own baseline · +6.2 vs tour on the same sequence
6. BH crosscourt → BH crosscourt → FH inside-out used 0.6% · won 47% · +2.7±12.2 vs own baseline · −0.8 vs tour on the same sequence Disrupted by Arnaud Clement (4/10)

Strengths and vulnerabilities

Value per 100 shots compared with the average player hitting (strengths) or facing (vulnerabilities) the same shot. Only shot types seen at least 120 times.

Tactical fingerprint

Each bar shows how far a style trait is from the ATP average, in standard deviations.

Charted matches

• Sebastien Grosjean v Andy Roddick L Wimbledon QF · Grass · 29 Jun 2005
• Sebastien Grosjean v Roger Federer L Wimbledon SF · Grass · 3 Jul 2004
• Sebastien Grosjean v Andy Roddick L Queens Club F · Grass · 13 Jun 2004
• Mark Philippoussis v Sebastien Grosjean L Wimbledon SF · Grass · 1 Jul 2003
• Sebastien Grosjean v Marat Safin L Davis Cup World Group F RR · Clay · 1 Dec 2002
• Sebastien Grosjean v Andre Agassi L Madrid Masters SF · Hard · 19 Oct 2002
• Marat Safin v Sebastien Grosjean L Roland Garros QF · Clay · 5 Jun 2002
• Sebastien Grosjean v Lleyton Hewitt L Davis Cup World Group F RR · Grass · 2 Dec 2001
• Sebastien Grosjean v Lleyton Hewitt Masters Cup F · Hard · 18 Nov 2001
• Yevgeny Kafelnikov v Sebastien Grosjean W Masters Cup SF · Hard · 17 Nov 2001
• Tommy Haas v Sebastien Grosjean W Paris Masters SF · Hard · 3 Nov 2001
• Arnaud Clement v Sebastien Grosjean W Australian Open SF · Hard · 26 Jan 2001