Len Olsen - Teams Played Against
| Team | Games | Tries | Goals | DropGoals | Points | First Game Against | Last Game Against |
|---|---|---|---|---|---|---|---|
| Barrow Raiders | 1 | 0 | 0 | 0 | 0 | 15 Sep 1951 | 15 Sep 1951 |
| Batley Bulldogs | 5 | 0 | 0 | 0 | 0 | 21 Jan 1950 | 24 Aug 1954 |
| Bradford Bulls | 10 | 1 | 0 | 0 | 3 | 08 Apr 1950 | 06 Nov 1954 |
| Bramley | 6 | 0 | 0 | 0 | 0 | 03 Dec 1949 | 30 Oct 1954 |
| Castleford Tigers | 5 | 0 | 0 | 0 | 0 | 31 Dec 1949 | 25 Oct 1954 |
| Dewsbury Rams | 9 | 0 | 0 | 0 | 0 | 14 Jan 1950 | 08 Jan 1955 |
| Doncaster | 1 | 0 | 0 | 0 | 0 | 09 Oct 1954 | 09 Oct 1954 |
| Featherstone Rovers | 6 | 1 | 0 | 0 | 3 | 24 Aug 1950 | 18 Apr 1955 |
| Highfield/Liverpool/Huyton | 1 | 0 | 0 | 0 | 0 | 11 Mar 1950 | 11 Mar 1950 |
| Huddersfield Giants | 6 | 1 | 0 | 0 | 3 | 24 Dec 1949 | 26 Dec 1952 |
| Hull FC | 5 | 0 | 0 | 0 | 0 | 24 Mar 1951 | 18 Dec 1954 |
| Hull Kingston Rovers | 5 | 1 | 0 | 0 | 3 | 26 Nov 1949 | 14 Aug 1954 |
| Hunslet | 4 | 0 | 0 | 0 | 0 | 11 Nov 1950 | 31 Mar 1951 |
| Keighley Cougars | 5 | 0 | 0 | 0 | 0 | 17 Dec 1949 | 25 Sep 1951 |
| Leeds Rhinos | 6 | 1 | 0 | 0 | 3 | 02 Jan 1950 | 01 Oct 1954 |
| Leigh Leopards | 4 | 0 | 0 | 0 | 0 | 26 Aug 1950 | 05 Dec 1953 |
| New Zealand | 1 | 0 | 0 | 0 | 0 | 22 Sep 1951 | 22 Sep 1951 |
| Rochdale Hornets | 1 | 0 | 0 | 0 | 0 | 04 Mar 1950 | 04 Mar 1950 |
| St. Helens | 2 | 0 | 0 | 0 | 0 | 04 Feb 1950 | 13 Oct 1951 |
| Swinton Lions | 4 | 0 | 0 | 0 | 0 | 19 Aug 1950 | 23 Feb 1952 |
| Wakefield Trinity | 4 | 0 | 0 | 0 | 0 | 30 Sep 1950 | 13 Nov 1954 |
| Warrington Wolves | 1 | 0 | 0 | 0 | 0 | 21 Aug 1954 | 21 Aug 1954 |
| Whitehaven | 4 | 0 | 0 | 0 | 0 | 25 Mar 1950 | 18 Oct 1952 |
| Widnes Vikings | 2 | 0 | 0 | 0 | 0 | 08 Sep 1951 | 12 Jan 1952 |
| Wigan Warriors | 6 | 0 | 0 | 0 | 0 | 29 Apr 1950 | 11 Dec 1954 |
| Workington Town | 2 | 0 | 0 | 0 | 0 | 09 Sep 1950 | 18 Aug 1951 |
| York Knights | 3 | 0 | 0 | 0 | 0 | 16 Sep 1950 | 27 Dec 1952 |