Sixteen nations competed at the 2017 World Baseball Classic qualification.
| Pos. | Position |
|---|---|
| P | Pitcher |
| C | Catcher |
| IF | Infielder |
| OF | Outfielder |
| Player | No. | Pos. | DOB and age | Team | League | Birthplace |
|---|---|---|---|---|---|---|
| Warwick Saupold | 30 | P | January 16, 1990 (aged 26) | | Major League Baseball | Perth, Western Australia |
| Player | No. | Pos. | DOB and age | Team | League | Birthplace |
|---|---|---|---|---|---|---|
| Boss Moanaroa | 28 | P | November 10, 1972 (aged 43) | Newcastle, New South Wales | ||
| Player | No. | Pos. | DOB and age | Team | League | Birthplace |
|---|---|---|---|---|---|---|
| Gift Ngoepe | 61 | IF | January 18, 1990 (aged 26) | | Major League Baseball | Randburg, Gauteng |
| Player | No. | Pos. | DOB and age | Team | League | Birthplace |
|---|---|---|---|---|---|---|
| Edmer Del Socorro | 26 | C | August 20, 1981 (aged 35) | Davao, Davao Region | ||
| Eric Farris | 75 | OF | March 3, 1986 (aged 30) | Sacramento, California | ||
| Juan Paulo Macasaet | 28 | OF | October 30, 1995 (aged 20) | Pasig, Rizal | ||
| Player | No. | Pos. | DOB and age | Team | League | Birthplace |
|---|---|---|---|---|---|---|
| Adrián González | 23 | IF | May 8, 1982 (aged 34) | | Major League Baseball | San Diego, California |
| Player | No. | Pos. | DOB and age | Team | League | Birthplace |
|---|---|---|---|---|---|---|
| Martin Červenka | 61 | C | August 3, 1992 (aged 24) | Prague, Bohemia | ||
| Player | No. | Pos. | DOB and age | Team | League | Birthplace |
|---|---|---|---|---|---|---|
| Max Kepler | 26 | IF | February 10, 1993 (aged 23) | | Major League Baseball | Berlin, Germany |
| Player | No. | Pos. | DOB and age | Team | League | Birthplace |
|---|---|---|---|---|---|---|
| Alex Blandino | 61 | IF | November 6, 1992 (aged 23) | San Jose, California | ||
| Player | No. | Pos. | DOB and age | Team | League | Birthplace |
|---|---|---|---|---|---|---|
| Pardinho | 0 | P | May 1, 2001 (aged 15) | | Major League Baseball | Lucelia, São Paulo |
| Leonardo Reginatto | 0 | C | July 19, 1987 (aged 29) | | Major League Baseball | Curitiba, Paraná |
| Gabriel Maciel | 0 | LF | October 1, 1999 (aged 17) | | Major League Baseball | Londrina, Paraná |
| Bo Takahashi | 0 | P | January 23, 1997 (aged 19) | | Major League Baseball | Presidente Prudente, São Paulo |
| Player | No. | Pos. | DOB and age | Team | League | Birthplace |
|---|---|---|---|---|---|---|
| Zach Graefser | 26 | Pitching Coach | ||||
| Bradley Marcelino | 18 | First Base Coach | February 27, 1982 | |||
| Bill Percy | 24 | Third Base Coach | ||||
| Mike Nickeas | 31 | Bench Coach | February 13, 1983 | |||
| Trevor Hoffman | 51 | Bullpen Coach | October 13, 1967 | San Diego Padres | MLB | Bellflower, CA |
| Player | No. | Pos. | DOB and age | Team | League | Birthplace |
|---|---|---|---|---|---|---|
| Zach Graefser | 26 | Pitching Coach | ||||
| Bradley Marcelino | 18 | First Base Coach | February 27, 1982 | |||
| Bill Percy | 24 | Third Base Coach | ||||
| Mike Nickeas | 31 | Bench Coach | February 13, 1983 | |||
| Trevor Hoffman | 51 | Bullpen Coach | October 13, 1967 | San Diego Padres | MLB | Bellflower, CA |