Women's 200m Freestyle
· Federica Pellegrini (ITA) took gold to become the first swimmer, male or female, to bag seven medals in a single event at the World Championships. She is now on three golds (2009, 2011, 2017), three silvers (2005, 2013, 2015) and one bronze (2007) in the women's 200m freestyle.
· With nine 200m freestyle medals at World Championships and Olympic Games combined, Pellegrini equalled Michael Phelps (USA, 9 in 100m and 200m butterfly) and Ryan Lochte (USA, 9 in 200m individual medley) for most ever in a single event.
· Pellegrini (28-355) became the oldest world champion in this event, breaking the old record held by Solenne Figues (FRA), who was 26 years and 51 days old when she took gold in 2005.
· Silver medallist Katie Ledecky (USA) lost a World Championships final for the first time in her career. Ledecky has now won 17 of 19 events she has entered at World Championships or Olympic Games. The only other event she did not win was the 4x100m freestyle with Team USA at the Rio 2016 Olympic Games. Back then, she also collected silver.
· Emma McKeon (AUS) grabbed bronze. McKeon is the fifth swimmer from Australia to claim a World Championships medal in this event, after Kylie Palmer (silver in 2011), Giaan Rooney (gold in 2001), Julia Greville (bronze in 1998) and Hayley Lewis (gold in 1991).
Men's 200m Butterfly
· Chad Le Clos (2013, 2017) became the third multi-gold medallist in this event at the World Championships after Michael Gross (FRG, 2) and Michael Phelps (USA, 5).
· Only Phelps (G5-S0-B0) and Wu Peng (CHN, W0-S1-B3) have collected more World Championships medals in this event than Le Clos (G2-S1-B0).
· László Cseh (HUN) took silver to bring his medal tally at the World Championships to 13 (G2-S6-B5). No other swimmer from Hungary has collected more than 11 (Katinka Hosszú).
· Cseh grabbed his second World Championships medal in the men’s 200m butterfly after his gold medal two years ago.
· Bronze medallist Daiya Seto (JPN) became the third medallist from Japan in this event and the first since 2011. Takeshi Matsuda (JPN, G0- S2-B1) and Takashi Yamamoto (JPN, G0-S1-B0) previously grabbed medals in this event for Japan.
Men's 50m Breaststroke
· Adam Peaty (GBR) became the first swimmer to win successive world titles in the men's 50m breaststroke. The only other swimmers from Great Britain with multiple world titles in a single event are Liam Tancock (GBR, 2 in men's 50m backstroke) and David Wilkie (GBR, 2 in men's 200m breaststroke).
· Peaty won by 0.53 seconds, the biggest ever winning margin in this event at the World Championships. In 2003, gold medallist James Gibson (GBR) finished 0.18 seconds ahead of second placed Oleg Lisogor (UKR).
· João Gomes Junior (BRA) took silver to become the second swimmer from Brazil to claim a medal in this event at the World Championships after Felipe França (BRA), who grabbed silver in 2009 and gold in 2011.
· Cameron van der Burgh (RSA) claimed bronze. Van der Burgh has now finished on the men's 50m breaststroke podium at each of the last six World Championships (G2-S1-B3). The only other male swimmer to reach six straight podiums in an individual event in the competition is Ryan Lochte (USA, men's 200m individual medley, 2005-2015).
Men's 800m Freestyle
· Gabriele Detti (ITA) became the second swimmer from Europe to claim the world title in the men's 800m freestyle after Przemyslaw Stanczyk (POL), who took gold in this event in 2007.
· Detti collected his second medal in Budapest, after taking bronze in the men's 400m freestyle.
· Silver medallist Wojciech Wojdak (POL) became the second medallist from Poland in this event, after 2007 world champion Stanczyk.
· Gregorio Paltrinieri (ITA) took bronze. For the second time two swimmers from one country reached the podium in this event at the World Championships after Australia in 2001 (silver and bronze).
Mixed 4 x 100m Individual Medley
· Matt Grevers (USA), Lilly King (USA), Caeleb Remel Dressel (USA) and Simone Manuel (USA) won gold for United States in a world record time (3:38.56).
· Earlier today, Ryan Murphy (USA), Kevin Cordes (USA), Kelsi Worrell (USA) and Mallory Comerford (USA) set a new world record in the heats (3:40.28).
· Australia (silver), Canada and China (shared bronze) all collected their first World Championships medals in this event.