2018 Davis Cup World Group

The World Group is the highest level of Davis Cup competition in 2018. The first-round losers will play in the Davis Cup World Group Play-offs.

Main article: 2018 Davis Cup

Participating teams
Participating teams

Australia
Belgium
Canada
Croatia

France
Germany
Great Britain
Hungary

Italy
Japan
Kazakhstan
Netherlands

Serbia
Spain
Switzerland
United States

Seeds
  1.  France (Final)
  2.  Belgium (Quarterfinals)
  3.  Great Britain (First round)
  4.  Croatia (Champion)
  5.   Switzerland (First round)
  6.  Australia (First round)
  7.  Serbia (First round)
  8.  Italy (Quarterfinals)

Draw
  First Round
2–4 February		 Quarterfinals
6–8 April		 Semifinals
14–16 September		 Final
23–25 November
                                     
Albertville, France (indoor hard)[1]
1   France 3  
Genoa, Italy (clay)[2]
  Netherlands 1  
  1   France 3  
Morioka, Japan (indoor hard)[3]
  8   Italy 1  
8   Italy 3
Lille, France (indoor hard)[4]
  Japan 1  
  1   France 3  
Marbella, Spain (clay)[5]
    Spain 2  
3   Great Britain 1  
Valencia, Spain (clay)[6]
  Spain 3  
    Spain 3
Brisbane, Australia (hard)[7]
    Germany 2  
6   Australia 1
Lille, France (indoor clay)[8]
  Germany 3  
  1   France 1
Astana, Kazakhstan (indoor hard)[9]
  4   Croatia 3
  Kazakhstan 4  
Varaždin, Croatia (indoor clay)[10]
5    Switzerland 1  
    Kazakhstan 1
Osijek, Croatia (indoor clay)[11]
  4   Croatia 3  
  Canada 1
Zadar, Croatia (clay)[12]
4   Croatia 3  
  4   Croatia 3
Niš, Serbia (indoor clay)[13]
    United States 2  
  United States 3  
Nashville, United States (indoor hard)[14]
7   Serbia 1  
    United States 4
Liège, Belgium (indoor hard)[15]
  2   Belgium 0  
  Hungary 2
2   Belgium 3  

First round

France vs. Netherlands

France
3		 Halle olympique, Albertville, France[1]
2–4 February
Hard (i)
Netherlands
1
1 2 3 4 5
1
Adrian Mannarino
Thiemo de Bakker		 64
77		 3
6		 3
6		      
2
Richard Gasquet
Robin Haase		 6
4		 77
63		 3
6		 7
5		    
3
Pierre-Hugues Herbert / Nicolas Mahut
Robin Haase / Jean-Julien Rojer		 78
66		 6
3		 63
77		 77
62		    
4
Adrian Mannarino
Robin Haase		 4
6		 77
65		 7
5		 62
77		 7
5		  
5
Richard Gasquet
Thiemo de Bakker		           not
played

Japan vs. Italy

Japan
1		 Morioka Takaya Arena, Morioka, Japan[3]
2–4 February
Hard (i)
Italy
3
1 2 3 4 5
1
Taro Daniel
Fabio Fognini		 4
6		 6
3		 6
4		 3
6		 2
6 		 
2
Yūichi Sugita
Andreas Seppi		 4
6		 6
2		 6
4		 4
6		 77
61		  
3
Ben McLachlan / Yasutaka Uchiyama
Simone Bolelli / Fabio Fognini		 5
7		 77
64		 63
77		 5
7		    
4
Yūichi Sugita
Fabio Fognini		 6
3		 1
6		 6
3		 66
78		 5
7 		 
5
Taro Daniel
Andreas Seppi		           not
played

Spain vs. Great Britain

Spain
3		 Club de Tenis Puente Romano, Marbella, Spain[5]
2–4 February
Clay
Great Britain
1
1 2 3 4 5
1
Albert Ramos Viñolas
Liam Broady		 6
3		 6
4		 78
66		      
2
Roberto Bautista Agut
Cameron Norrie		 6
4		 6
3		 3
6		 2
6		 2
6		  
3
Pablo Carreño Busta / Feliciano López
Dominic Inglot / Jamie Murray		 6
4		 6
4		 77
64		      
4
Albert Ramos Viñolas
Cameron Norrie		 77
64		 2
6		 77
64		 6
2		    
5
Roberto Bautista Agut
Liam Broady		           not
played

Australia vs. Germany

Australia
1		 Pat Rafter Arena, Brisbane, Australia[7]
2–4 February
Hard
Germany
3
1 2 3 4 5
1
Alex de Minaur
Alexander Zverev		 5
7		 6
4		 6
4		 3
6		 64
77		  
2
Nick Kyrgios
Jan-Lennard Struff		 6
4		 6
4		 6
4		      
3
Matthew Ebden / John Peers
Tim Pütz / Jan-Lennard Struff		 4
6		 77
61		 2
6		 77
64		 4
6 		 
4
Nick Kyrgios
Alexander Zverev		 2
6		 63
77		 2
6		      
5
Alex de Minaur
Jan-Lennard Struff		           not
played

Kazakhstan vs. Switzerland

Kazakhstan
4		 Daulet National Tennis Centre, Astana, Kazakhstan[9]
2–4 February
Hard (i)
Switzerland
1
1 2 3 4 5
1
Dmitry Popko
Henri Laaksonen		 6
2		 79
67		 3
6		 7
5		    
2
Mikhail Kukushkin
Adrian Bodmer		 3
6		 6
3		 6
2		 6
3		    
3
Timur Khabibulin / Aleksandr Nedovyesov
Marc-Andrea Hüsler / Luca Margaroli		 6
4		 6
4		 3
6		 65
77		 6
3		  
4
Roman Khassanov
Marc-Andrea Hüsler		 3
6		 1
6		        
5
Dmitry Popko
Adrian Bodmer		 77
65		 1
6		 [10]
[6]		  

Croatia vs. Canada

Croatia
3		 Gradski vrt Hall, Osijek, Croatia[11]
2–4 February
Clay (i)
Canada
1
1 2 3 4 5
1
Borna Ćorić
Vasek Pospisil		 3
6		 6
2		 6
3		 6
2		    
2
Viktor Galović
Denis Shapovalov		 4
6		 4
6		 2
6		      
3
Marin Čilić / Ivan Dodig
Daniel Nestor / Vasek Pospisil		 2
6		 3
6		 6
4		 7
5		 6
2		  
4
Borna Ćorić
Denis Shapovalov		 6
4		 6
4		 6
4		      
5
Viktor Galović
Vasek Pospisil		           not
played

Serbia vs. United States

Serbia
1		 Čair Sports Center, Niš, Serbia[13]
2–4 February
Clay (i)
United States
3
1 2 3 4 5
1
Laslo Đere
Sam Querrey		 77
64		 2
6		 5
7		 4
6		    
2
Dušan Lajović
John Isner		 4
6		 79
67		 3
6		 6
3		 64
77		  
3
Nikola Milojević / Miljan Zekić
Ryan Harrison / Steve Johnson		 77
63		 2
6		 5
7		 4
6		    
4
Peđa Krstin
Steve Johnson		 6
1		 7
5		        
5
Laslo Đere
John Isner		           not
played

Belgium vs. Hungary

Belgium
3		 Country Hall Liège, Liège, Belgium[15]
2–4 February
Hard (i)
Hungary
2
1 2 3 4 5
1
Ruben Bemelmans
Márton Fucsovics		 6
4		 4
6		 77
65		 6
3		    
2
David Goffin
Attila Balázs		 6
4		 6
4		 6
0		      
3
Ruben Bemelmans / Joris De Loore
Attila Balázs / Márton Fucsovics		 3
6		 4
6		 77
62		 6
4		 5
7 		 
4
David Goffin
Márton Fucsovics		 7
5		 6
4		 3
6		 6
2		    
5
Julien Cagnina
Zsombor Piros		 3
6		 63
77		        

Quarterfinals

Italy vs. France

Italy
1		 Valletta Cambiaso ASD, Genoa, Italy[2]
6–8 April
Clay
France
3
1 2 3 4 5
1
Andreas Seppi
Lucas Pouille		 3
6		 2
6		 6
4		 6
3		 1
6 		 
2
Fabio Fognini
Jérémy Chardy		 66
78		 6
2		 6
2		 6
3		    
3
Simone Bolelli / Fabio Fognini
Pierre-Hugues Herbert / Nicolas Mahut		 4
6		 3
6		 1
6		      
4
Fabio Fognini
Lucas Pouille		 6
2		 1
6		 63
77		 3
6		    
5
Andreas Seppi
Jérémy Chardy		           not
played

Spain vs. Germany

Spain
3		 Plaza de Toros de Valencia, Valencia, Spain[6]
6–8 April
Clay
Germany
2
1 2 3 4 5
1
David Ferrer
Alexander Zverev		 4
6		 2
6		 2
6		      
2
Rafael Nadal
Philipp Kohlschreiber		 6
2		 6
2		 6
3		      
3
Feliciano López / Marc López
Tim Pütz / Jan-Lennard Struff		 3
6		 4
6		 6
3		 77
64		 5
7 		 
4
Rafael Nadal
Alexander Zverev		 6
1		 6
4		 6
4		      
5
David Ferrer
Philipp Kohlschreiber		 77
61		 3
6		 77
64		 4
6		 7
5		  

Croatia vs. Kazakhstan

Croatia
3		 Varaždin Arena, Varaždin, Croatia[10]
6–8 April
Clay (i)
Kazakhstan
1
1 2 3 4 5
1
Marin Čilić
Dmitry Popko		 6
2		 6
1		 6
2		      
2
Borna Ćorić
Mikhail Kukushkin		 6
3		 65
77		 4
6		 2
6		    
3
Ivan Dodig / Nikola Mektić
Timur Khabibulin / Aleksandr Nedovyesov		 62
77		 6
4		 6
4		 6
2		    
4
Marin Čilić
Mikhail Kukushkin		 6
1		 6
1		 6
1		      
5
Borna Ćorić
Dmitry Popko		           not
played

United States vs. Belgium

United States
4		 Curb Event Center, Nashville, United States[14]
6–8 April
Hard (i)
Belgium
0
1 2 3 4 5
1
John Isner
Joris De Loore		 6
3		 64
77		 710
68		 6
4		    
2
Sam Querrey
Ruben Bemelmans		 6
1		 77
65		 7
5		      
3
Ryan Harrison / Jack Sock
Sander Gillé / Joran Vliegen		 5
7		 77
61		 77
63		 6
4		    
4
Ryan Harrison
Ruben Bemelmans		 6
3		 6
4		        
5
Sam Querrey
Joris De Loore		           not
played

Semifinals

France vs. Spain

France
3		 Stade Pierre-Mauroy, Lille, France[4]
14–16 September
Hard (i)
Spain
2
1 2 3 4 5
1
Benoît Paire
Pablo Carreño Busta		 7
5		 6
1		 6
0		      
2
Lucas Pouille
Roberto Bautista Agut		 3
6 		77
65		 6
4		 2
6 		6
4		  
3
Julien Benneteau / Nicolas Mahut
Marcel Granollers / Feliciano López		 6
0		 6
4		 79
67		      
4
Richard Gasquet
Albert Ramos Viñolas		 6
1		 4
6 		[12]
[14]		      
5
Nicolas Mahut
Marcel Granollers		 77
62		 3
6		 [11]
[13]		      

Croatia vs. United States

Croatia
3		 Višnjik, Zadar, Croatia[12]
14–16 September
Clay
United States
2
1 2 3 4 5
1
Borna Ćorić
Steve Johnson		 6
4		 77
64		 6
3		      
2
Marin Čilić
Frances Tiafoe		 6
1		 6
3		 77
65		      
3
Ivan Dodig / Mate Pavić
Mike Bryan / Ryan Harrison		 5
7 		66
78		 6
1		 77
65		 65
77		  
4
Marin Čilić
Sam Querrey		 77
62		 66
78		 3
6 		4
6 		   
5
Borna Ćorić
Frances Tiafoe		 60
77		 6
1		 611
713		 6
1		 6
3		  

Final

France vs. Croatia

France
1		 Stade Pierre-Mauroy, Lille, France[8]
23–25 November
Clay (i)
Croatia
3
1 2 3 4 5
1
Jérémy Chardy
Borna Ćorić		 2
6		 5
7		 4
6		      
2
Jo-Wilfried Tsonga
Marin Čilić		 3
6		 5
7		 4
6		      
3
Nicolas Mahut / Pierre-Hugues Herbert
Ivan Dodig / Mate Pavić		 6
4		 6
4		 3
6		 77
63		    
4
Lucas Pouille
Marin Čilić		 63
77		 3
6		 3
6		      
5
Jo-Wilfried Tsonga
Borna Ćorić		           not
played
gollark: This is underspecified because bee² you, yes.
gollark: All numbers are two's complement because bee you.
gollark: The rest of the instruction consists of variable-width (for fun) target specifiers. The first N target specifiers in an operation are used as destinations and the remaining ones as sources. N varies per opcode. They can be of the form `000DDD` (pop/push from/to stack index DDD), `001EEE` (peek stack index EEE if source, if destination then push onto EEE if it is empty), `010FFFFFFFF` (8-bit immediate value FFFFFFFF; writes are discarded), `011GGGGGGGGGGGGGGGG` (16-bit immediate value GGGGGGGGGGGGGGGG; writes are also discarded), `100[H 31 times]` (31-bit immediate because bee you), `101IIIIIIIIIIIIIIII` (16 bits of memory location relative to the base memory address register of the stack the operation is conditional on), `110JJJJJJJJJJJJJJJJ` (16 bit memory location relative to the top value on that stack instead), `1111LLLMMM` (memory address equal to base memory address of stack LLL plus top of stack MMM), or `1110NNN` (base memory address register of stack MMM).Opcodes (numbered from 0 in order): MOV (1 source, as many destinations as can be parsed validly; the value is copied to all of them), ADD (1 destination, multiple sources), JMP (1 source), NOT (same as MOV), WR (write to output port; multiple sources, first is port number), RE (read from input port; one source for port number, multiple destinations), SUB, AND, OR, XOR, SHR, SHL (bitwise operations), MUL, ROR, ROL, NOP, MUL2 (multiplication with two outputs).
gollark: osmarksISA™️-2028 is a VLIW stack machine. Specifically, it executes a 384-bit instruction composed of 8 48-bit operations in parallel. There are 8 stacks, for safety. Each stack also has an associated base memory address register, which is used in some "addressing modes". Each stack holds 64-bit integers; popping/peeking an empty stack simply returns 0, and the stacks can hold at most 32 items. Exceeding a stack's capacity is runtime undefined behaviour. The operation encoding is: `AABBBCCCCCCCCC`:A = 2-bit conditional operation mode - 0 is "run unconditionally", 1 is "run if top value on stack is 0", 2 is "run if not 0", 3 is "run if first bit is ~~negative~~ 1".B = 3-bit index for the stack to use for the conditional.C = 9-bit opcode (for extensibility).
gollark: By "really fast", I mean "in a few decaminutes, probably".

References
  1. "France v Netherlands". DavisCup.com.
  2. "Italy v France". DavisCup.com.
  3. "Japan v Italy". DavisCup.com.
  4. "France v Spain". DavisCup.com.
  5. "Spain v Great Britain". DavisCup.com.
  6. "Spain v Germany". DavisCup.com.
  7. "Australia vs. Germany". DavisCup.com.
  8. "France v Croatia". DavisCup.com.
  9. "Kazakhstan v Switzerland". DavisCup.com.
  10. "Croatia v Kazakhstan". DavisCup.com.
  11. "Croatia v Canada". DavisCup.com.
  12. "Croatia v United States". DavisCup.com.
  13. "Serbia v United States". DavisCup.com.
  14. "United States v Belgium". DavisCup.com.
  15. "Belgium v Hungary". DavisCup.com.
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