– Nadal won the 2008 series ahead of Murray because Nadal defeated Murray in Toronto, Canada. 5 – Pennetta finished second in the 2009 final standings based on more match wins in US Open Series events. 6 – Murray won the 2010 series ahead of Federer because Murray defeated Federer in Toronto. 7 – Kuznetsova finished third in 2010 (over Victoria Azarenka and Maria Sharapova) based on more games won in US Open Series events (all three won 9 matches and 19 sets). 8 – Radwańska finished second in the 2011 final standings based on more match wins in US Open Series events. 9 – Players who had their point totals doubled due to having obtained points in at least three different events, based on a rule enforced from 2014 on. 10 – Dimitrov finished second in the 2016 final standings based on more match wins in US Open Series events. Records Players who won both the US Open Series and the US Open in the same year, receiving $1 million bonus prize money Men: Roger Federer (2007) & Rafael Nadal (2013). Women: Kim Clijsters (2005*) & Serena Williams (2013, 2014). * - Clijsters received the Champion's prize money, $1.1M, plus a bonus equaling the prize money, $1.1M, for a total of $2.2M. Most points won Without doubling bonus for three countable tournaments (until 2013): Men: Mardy Fish, 230 points in 2011. Women: Kim Clijsters, 225 points in 2005. With doubling bonus for three countable tournaments (since 2014): Men: Milos Raonic, 280 points in 2014. Women: Serena Williams, 430 points in 2014. Most US Open Series overall victories Men: 2, Andy Roddick (2005, 2006); Rafael Nadal (2008, 2013); Andy Murray (2010, 2015). Women: 3, Serena Williams (2011, 2013, 2014). Most US Open Series Top-3 finishes Men: 5, Andy Murray (2006, 2008, 2009, 2010, 2015) & John Isner (2011, 2012, 2013, 2014, 2015). Women: 4, Serena Williams (2011, 2013, 2014, 2015) & Agnieszka Radwańska (2011, 2013, 2014, 2016). Most US Open Series tournament victories Men: 9, Roger Federer Women: 7, Serena Williams Biggest payout in the series (which were the largest in tennis history until Ashleigh Barty won US$4.42 at the WTA Finals in 2019) Serena Williams (2014) – $4 million (won US Open Series and US Open). Biggest payout in men's: Novak Djokovic (2015) – $3.8 million (US Open Series runner-up and US Open winner). Most successful nation in the