The 2017 Swim Cup in Lausanne, Switzerland, kicked off Wednesday and featured some of the best swimmers in the world, including Taylor Ruck, Katinka Hosszu, Ranomi Kromowidjojo, and Michael Andrew and a deep Japanese squad led by Kosuke Hagino, Daiya Seto, Rikako Ikee, Yui Ohashi, and Junya Koga.

2017 Swim Cup Lausanne

December 20-21

Lausanne, Switzerland

Short Course Meters (SCM)

MEET WEBSITE

LIVE RESULTS

With all that star power, it was 17-year-old Canadian phenom Taylor Ruck (who will be taking her talents to Stanford in the fall) who stole the show by demolishing Hilary Caldwell's Canadian record in the 200m back with a 2:01.66 — nearly a full second faster than Caldwell's 2:02.56 from 2013. It's worth noting that time is only 0.07 off the 2:01.59 Katinka Hosszu swam for gold last week at the European Championships in Copenhagen, Denmark.

Hosszu opted out of the 200m back in Lausanne and instead picked up a pair of narrow wins in the 50m back (26.47) and 100m IM (58.40). In the latter, Hosszu only touched out Japan's Runa Imai by 0.03 (58.43).

Other notable swims on the women's side included a marquee matchup between Rikako Ikee and Ranomi Kromowidjojo in the 50m fly. In the end, Ikee snubbed Kromowidjojo 25.06 to 25.12 for a new Asian record. Another Japanese swimmer, Yui Ohashi, took advantage of a Hosszu-less field in the 400m IM by dropping a massive 4:24.03 — destroying the previous Japanese record (4:27.51) in the process.

On the men's side of things, it was all Japan — taking seven out of eight wins Wednesday night.

Certainly the most dominating performance came from Daiya Seto in the 200m fly. Seto demolished the field by over five seconds with a 1:50.33 — off his own 2014 Japanese record of 1:48.92.

Kosuke Hagino picked up a pair of wins in the 400m IM (4:02.99) and 100m IM (52.55). Junya Koga stole the 50m back in 23.25. Yasuhiro Koseki easily ran away in the 100m breast in 57.53. Katsumi Nakamura outdid Belgium's Pieter Timmers in the 100m free, 47.00 to 47.28. Masaki Kaneko absolutely dominated the 200m back by eight seconds to pick up the win in 1:50.04.

Ukraine's Andrii Govorov, in the first men's event of the night, picked up the only non-Japanese win in the 50m fly with a quick 22.88 to out-touch Michael Andrew in 23.04.

For complete results, head over to the meet's live results page.