Holy moly. Zane Grothe was ON FIRE at Winter Nationals in Columbus, Ohio, last week. On Thursday night, he became the first man ever under the 4:08 barrier in the 500 free with a monster 4:07.25 — demolishing all records. On Saturday night, Grothe unleashed a 14:18.25 in the 1650 — crushing the fastest performance of all time by over four seconds and becoming the first man ever under the 14:20 barrier.

Check out the race video in its entirety below plus results and splits analysis.

Men's 1650 Freestyle

COMPLETE RESULTS

• U.S. Open: 14:22.41 -- Clark Smith (Texas), 2017 14:18.25 -- Zane Grothe
• American: 14:22.41 -- Clark Smith (Texas), 2017 14:18.25 -- Zane Grothe

1. Zane Grothe -- 14:18.25 (U.S. Open, American Record) 
2. Mitch D'Arrigo -- 14:43.87
3. Marcelo Acosta -- 14:54.95
4. Christopher Bready -- 14:56.62
5. Jack Collins -- 14:56.95
6. Theodore Smith -- 15:02.21
7. Graham Barrett -- 15:06.16
8. Nick Hogsed -- 15:06.65

Check out these splits:

• 500 -- 4:17.41
• 1000 -- 8:40.47 (4:23.06)
• 1500 -- 13:02.09 (4:21.62)
• 1650 -- 14:18.25

By comparison, when Clark Smith set the previous record:

• 500 -- 4:20.79
• 1000 -- 8:45.05 (4:24.26)
• 1500 -- 13:07.58 (4:22.53)
• 1650 --  14:22.41