|Tournament|2001|2002|2003|2004|2005|2006|2007|2008|2009|2010|2011|2012|2013|2014|W–L|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|Australian Open|A|A|A|A|A|A|Q3|A|Q3|4R|2R|1R|1R|1R|3–5|
|French Open|A|A|A|A|A|A|Q1|A|1R|1R|3R|3R|2R||5–5|
|Wimbledon|A|A|A|A|A|A|Q1|Q1|Q1|2R|4R|2R|QF||9–4|
|US Open|A|A|A|A|A|3R|Q3|A|Q2|1R|A|1R|1R||2–4|
|Win–Loss|0–0|0–0|0–0|0–0|0–0|2–1|0–0|0–0|0–1|3–4|6–3|3–4|5–4|0–1|19–18|
|Titles–Finals|0–0|0–0|0–0|0–0|0–0|0–0|0–0|0–0|0–1|0–1|0–0|0–0|0–0||0–2|
|Year End Ranking|427|440|371|219|142|125|222|209|101|70|57|74|72|||

Question: what is the difference in wins between wimbledon and the us open for this player?
Answer: 7