Career
Born in Kimberley, Plaatjie made his senior debut for Griqualand West during the 2004-2005 season of the University of California, Berkeley Provincial Cup, playing a first-class match against North West in October 2004. The following season, he added another five matches in the same competition, also making his limited-overs debut. However, he switched to Easterns for the 2006-2007 season.
In his debut three-day match for his team, Plaatjie faced his old side, and went to make a career-best 49 not out in the second innings, from number ten in the batting order.
The 2006-2007 season saw Plaatjie finish the provincial three-day season with 25 wickets from eight matches, behind only David Wiese (30 wickets) for Easterns. Against Mpumalanga, he took what was to be his only first-class five-wicket haul, 6/42 from 13.1 overs.
However, during the 2007-2008 season, Plaatjie struggled for form, playing only five three-day matches and two limited-overs matches in what was to be his last season with Easterns. After a gap of several years without any high-level cricket, he returned to Griqualand West for the 2010-2011 season, where he was used predominantly in the one-day format.
His final match at provincial level was a one-off limited-overs appearance in February 2012, against Boland.