Career
Winstanley qualified for the 2011 BDO International World Darts Championship, where she lost 0–2 to Irina Armstrong in the quarter-finals. The following year, she went one step further by making it through to the semi-finals where she was narrowly defeated by Deta Hedman in a tie-break final leg decider. Winstanley qualified again for the World Championships in 2013 and made it as far as the quarter-finals where she was beaten 2–0 by Anastasia Dobromyslova.
BDO International
2011: Quarter Finals (lost to Irina Armstrong 0–2)
2012: Semi Finals (lost to Deta Hedman 1–2)
2013: Quarter Finals (lost to Anastasia Dobromyslova 0–2)
2014: First round (lost to Deta Hedman 0–2)
2015: First Round (lost to Sharon Prins 0–2)
2016: Quarter Final: (lost to Deta Hedman 0–2).
