The 2005 US Open was the fourth and final Grand Slam of 2005. It was held between August 29, 2005, and September 11, 2005. The "9/11/01" sign to remember the 9/11 attacks was not featured on the court. It was, however, featured during the 2011 final between Novak Djokovic and Rafael Nadal, the 2016 final between Djokovic and Stan Wawrinka, and the 2021 final between Djokovic and Daniil Medvedev, respectively.
Roger Federer was successful in defending his 2004 title, defeating Andre Agassi in the final. Svetlana Kuznetsova was unsuccessful in her title defense, losing in the first round against compatriot Ekaterina Bychkova. Kim Clijsters won her first Grand Slam title after four previous Grand Slam final losses. It was the first of three US Open titles for Clijsters, also winning in 2009 and 2010. This was the first time that future US Open (Tennis) champion Andy Murray was featured in the tournament.
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Roger Federer defeating 
Andre Agassi,[1] 6–3, 2–6, 7–6(1), 6–1
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Kim Clijsters defeating 
Mary Pierce, 6–3, 6–1
Bob Bryan / Mike Bryan defeating 
Jonas Björkman / 
Max Mirnyi, 6–1, 6–4
Lisa Raymond / .svg/1280px-Flag_of_Australia_(converted).svg.png){kind=small}
Samantha Stosur defeating 
Elena Dementieva / 
Flavia Pennetta, 6–2, 5–7, 6–3
Daniela Hantuchová[2] / 
Mahesh Bhupathi defeating 
Katarina Srebotnik / .svg/1280px-Flag_of_Serbia_and_Montenegro_(1992%E2%80%932006).svg.png){kind=small}
Nenad Zimonjić, 6–4, 6–2
Ryan Sweeting defeating Jérémy Chardy, 6–4, 6–4
Victoria Azarenka[3] defeating Alexa Glatch, 6–3, 6–4
Alex Clayton / Donald Young defeating Carsten Ball / 
Thiemo de Bakker, 7–6(3), 4–6, 7–5
Nikola Fraňková / Alisa Kleybanova defeating Alexa Glatch / Vania King, 7–5, 7–6(3)
More information on the top 32 seeds here.
Brian Baker for upset defeat of 
Gastón Gaudio James Blake for a comeback after injury-marred 2004 Sania Mirza for winning the match despite bleeding toes Andre Agassi for second most wins in the US Open history Nicole Vaidišová for a personal best performance in a Grand Slam Tourney James Blake for defeating No. 2 seed 
Rafael Nadal Venus Williams for defeating sister Serena Williams Guillermo Coria on winning the longest match (4 & 1/2 hours) of 2005 US open
Jarkko Nieminen for becoming the first Finnish man to reach the quarter-finals of a grand slam Mary Pierce for a great comeback and making it to the US Open Semifinal for the 1st time Daniela Hantuchová and Mahesh Bhupathi for winning the mixed doubles title Mike and Bob Bryan for winning their first men's doubles title Kim Clijsters for capturing her first Grand Slam singles title Roger Federer for capturing the men's singles title