All the usual caveats apply. Whether or not an upset occurred was determined strictly by rankings and results that look like upsets this week may not look like upsets by the end of the season or even by next week. 

Below are all the upsets we could find in week 15 of the 2023-24 NCAA D1 college wrestling season. They are listed by difference in rankings, from largest to smallest. 

133lbs: #29 Jacob Van Dee, Nebraska over #4 Dylan Ragusin, Michigan 3-2

133lbs: Jace Koelzer, Oklahoma over #17 Derrick Cardinal, South Dakota State 2-0

141lbs: #21 Cole Matthews, Pittsburgh over #5 Lachlan McNeil, North Carolina 6-2

165lbs: #27 Jake Logan, Lehigh over #14 Noah Mulvaney, Bucknell 9-8

197lbs: #24 Max Shaw, North Carolina over #14 Mac Stout, Pittsburgh 5-4

133lbs: #26 Anthony Madrigal, Illinois over #18 Tyler Wells, Minnesota 4-0

125lbs: #29 Trever Anderson, Northern Iowa over #21 Kysen Terukina, Iowa State 8-5 SV

133lbs: #31 Blake Boarman, Chattanooga over #23 Ethan Oakley, Appalachian State F 4:37

141lbs: #27 Jordan Hamdan, Michigan State over #19 Kal Miller, Maryland 6-1

165lbs: #15 Antrell Taylor, Nebraska over #8 Cameron Amine, Michigan 3-2 TB

141lbs: #24 Danny Pucino, Illinois over #18 Vance Vombaur, Minnesota 8-5

149lbs: #11 Jaden Abas, Stanford over #5 Chance Lamer, Cal Poly 4-3

125lbs: #6 Drake Ayala, Iowa over #2 Braeden Davis, Penn State 4-2

157lbs: #13 Ryder Downey, Northern Iowa over #9 Cody Chittum, Iowa State 12-9

125lbs: Chad Bellis, Appalachian State over #30 Brayden Palmer, Chattanooga 10-0

165lbs: Blaine Brenner, Minnesota over #31 Chris Moore, Illinois 8-2

149lbs: #15 Caleb Rathjen, Iowa over #12 Tyler Kasak, Penn State 11-8 SV

125lbs: #29 Trever Anderson, Northern Iowa over #26 Elijah Griffin, California Baptist F 6:15

141lbs: #9 Anthony Echemendia, Iowa State over #6 Cael Happel, Northern Iowa 9-6

157lbs: #14 Peyton Robb, Nebraska over #12 Will Lewan, Michigan 2-1

197lbs: #5 Tanner Sloan, South Dakota State over #3 Stephen Buchanan, Oklahoma 4-1

165lbs: #7 Mitchell Mesenbrink, Penn State over #6 Michael Caliendo, Iowa 12-6

149lbs: #23 Jordan Williams, Oklahoma State over #22 Alek Martin, South Dakota State F 4:46