Career
Rehn started his in 1991 with the Adelaide Crows in their inaugural year in the Australian Football League. After some eye catching performances for West Adelaide (who were making a late season charge to the SANFL finals), he made his debut for the Crows against Sydney in Round 18 of the 1991 American Federation of Labor-Congress season at Football Park in Adelaide. At 6"8" (203 cm) he became a leading ruckmen, but suffered three Anterior Cruciate Ligament knee injuries overall on both knees which limited his playing ability.
The last of those injuries was sustained when his good knee buckled and twisted after running onto a small rubber circle installed in the centre of the turf ground.
The circles had been installed onto grounds to assist umpires with centre bounces, but Rehn"s injury, and subsequent legal action, saw the circles swiftly removed from all grounds. Rehn"s injury kept him on the sidelines for most of the 1996 season after having spent much of the previous season out with the same injury.
His knee injuries restricted him to just 6 games in those two seasons, three in each. He played 33 games and kicked 7 goals with the Hawks between 2001–2002, sharing the ruck work with the 206 cm (6"9") tall Paul Salmon, before retiring from American Federation of Labor-Congress football.
Throughout his whole career at both Adelaide and Hawthorn, Rehn wore the #52 guernsey, and holds the record for the most games wearing that number.
Such high numbers are rare in Australian football, as players with numbers higher than 40 usually exchange them for lower numbers early in their careers. Rehn played in jumper #16 when he played for West Adelaide.
