| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | John Gustaf•Lager |
| Used name | John•Lager |
| Born | 1 March 1887 in Vaxholm, Stockholm (SWE) |
| Died | 17 February 1961 in Stockholm, Stockholm (SWE) |
| Affiliations | Vaxholms RF, Vaxholm (SWE) |
| NOC | Sweden |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1912 Summer Olympics | Rowing | SWE |
John Lager | |||
| Coxed Fours, Outriggers, Men (Olympic) | Vaxholm Roddklubb | 2 h6 r1/4 | ||||
| 1920 Summer Olympics | Rowing | SWE |
John Lager | |||
| Coxed Fours, Men (Olympic) | Sweden | 2 h1 r1/2 |