133 and 157 were once again the vortex of a volatile weekend of college wrestling. But it was Ian Parker of Iowa State at 141 who made the most noise of anyone. Below, we recap the biggest movers up and down the rankings after week 13.

2018-19 NCAA Rankings

Stock Is Up

141 Pounds: Ian Parker, Iowa State

From #18 to #11

Parker lost to Iowa's Vince Turk at the Lindenwood Open back in November but has been undefeated ever since. Parker kept that streak going in a big way last weekend, knocking off Dom Demas in Ames and two-time All-American Kaid Brock in Stillwater. Last weekend belonged to Ian Parker. 

Parker vs. Demas:

Parker vs. Brock:

133 Pounds: Ben Thornton, Purdue

From unranked to #15

Thornton has been hanging around the top 20 bubble for most of his collegiate career. Now a senior, the 2018 national qualifier scored perhaps the biggest win of his career when he downed the electric true freshman Roman Bravo-Young in West Lafayette. 

Thornton vs. RBY:

157 Pounds: Alec Pantaleo, Michigan

From #11 to #5

We've been waiting for this kind of performance from two-time All-American Alec Pantaleo. His defeat of Ke-Shawn Hayes in the big rivalry dual meet moves him back into the top 10 at 157 for the first time since December. 

Pantaleo vs. Hayes:

157 Pounds: Josh Humphreys, Lehigh

From #20 to #14

True freshman Josh Humphreys has been a revelation this season for a Lehigh lineup that has been depleted by injuries. Two wins over ranked wrestlers, BC LaPrade of Virginia Tech and Christian Pagdilao of Arizona State, resulted in Humphreys' highest ranking of his young career. 

141 Pounds: Tristan Moran, Wisconsin

From #13 to #8

Moran has had quite a few marquee wins throughout his career: Tommy Thorn, Ronnie Perry, Josh Alber, Nick Lee and, after last weekend, Mitch McKee. The latest victory was enough to move Moran into the top 10. 

Click here to watch Moran vs. McKee.

157 Pounds: Jarrett Jacques, Missouri

From #18 to #13

Humphreys' big weekend also provided another true freshman, Jarrett Jacques of Missouri, with a boost. Jacques beat Humphreys in Florida at the end of 2018. 

Stock Is Down

133 Pounds: Micky Phillippi, Pittsburgh

From #2 to #5

Phillippi's stint in the #2 spot was short-lived. Phillippi's win over Daton Fix two weeks ago earned him that spot, but his loss to Korbin Myers last week sent him down to #5. 

133 Pounds: Matt Schmitt, West Virginia

From #16 to #19

A loss to Sean Nickell dropped Schmitt to #19 in what may be the most competitive division in the NCAA. 

157 Pounds: Griffin Parriott, Purdue

From #8 to #11

Parriott missed the Boilermakers' dual meet against Penn State and wrestled in the Loras Open instead. As a result, he gets jumped in the rankings by the likes of Eric Barone and Alec Pantaleo.