Maynard played mostly as a defender with both the Crows and Norwood. He played in the back pocket Adelaide's inaugural side in 1991 which defeated that seasons eventual premiers Hawthorn by 86 points at Football Park in Adelaide. He was later chosen on the interchange bench in the club's official 'Team of the Decade'. Between 1991 and 1995, Rodney Maynard played 81 games and kicked 24 goals for the Crows.
After leaving the AFL, Maynard returned to Lameroo where he played 200 senior games and went on to win six Mail Medals for the best and fairest in the Mallee Football League. His brother Brenton who didn't make the AFL won 4 Mail medals. Maynard regularly competes in the West End Slowdown which consists of former Crows and Port Adelaide players in facing off in a game for charity.
At the end of 2008 he retired from Lameroo winning the premiership on that day.