Aug 26 (Reuters) - Facts and records ahead of the 141st edition of the U.S. Open, which begins on Monday: PRIZE MONEY Men"s/women"s singles winner: $2.5 million Men"s/women"s singles runner-up: $1.25 million Total prize pot: $57.5 million SHOWCOURTS After being held without spectators last year due to the COVID-19 pandemic, the tournament will be at full capacity for the main draw, making it the first Grand Slam to have full attendance since the 2020 Australian Open. - Arthur Ashe Stadium Capacity: 23,771 The stadium is named after Arthur Ashe, who won the men"s singles title at the U.S. Open in 1968, the Australian Open in 1970 and Wimbledon in 1975. - Louis Armstrong Stadium Capacity: 14,053 The arena was opened during the 2018 U.S. Open to replace the 1978 stadium of the same name. It has a retractable roof, the largest of its kind among number two stadiums at Grand Slam venues. - Grandstand Capacity: 8,125 The court made its debut on the first day of the 2016 U.S. Open. TOP SEEDS Men"s singles 1-Novak Djokovic (Serbia) 2-Daniil Medvedev (Russia) 3-Stefanos Tsitsipas (Greece) 4-Alexander Zverev (Germany) 5-Andrey Rublev (Russia) Women"s singles 1-Ash Barty (Australia) 2-Aryna Sabalenka (Belarus) 3-Naomi Osaka (Japan) 4-Karolina Pliskova (Czech Republic) 5-Elina Svitolina (Ukraine) MOST CHAMPIONSHIP TITLES Men"s singles Before 1968: 7 - Bill Tilden (U.S.), William Larned (U.S.), Richard Sears (U.S.) Open Era: 5 - Roger Federer (Switzerland), Pete Sampras (U.S.), Jimmy Connors (U.S.) Women"s singles Before 1968: 8 - Molla Mallory (U.S.) Open Era: 6 - Serena Williams (U.S.), Chris Evert (U.S.) YOUNGEST CHAMPION Men"s singles - Pete Sampras (U.S) (1990): Aged 19 years, 28 days Women"s singles - Tracy Austin (U.S) (1979): Aged 16 years, 8 months, 28 days OLDEST CHAMPION Men"s singles - William Larned (U.S.) (1911): Aged 38 years, 8 months, 3 days Women"s singles - Molla Mallory (U.S.) (1926): Aged 42 years, 5 months, 27 days