Iowa State announced Tuesday that wrestling coach Kevin Jackson is stepping down at the end of the season.

In his eight seasons at Iowa State, Jackson has a 68-54 dual record. He’s produced four NCAA champions, eight All-Americans and six Big 12 champions.

Here’s a timeline of key points in his tenure:

April 30, 2009: Jackson hired as head coach of the Iowa State wrestling program

Nov. 12, 2009: Jackson picks up first win as Iowa State head coach in season opener as No. 2 Iowa State beats South Dakota State, 43-3.

Jan. 24, 2010: No. 2 Iowa State defeats No. 3 Oklahoma State, 20-18. Jackson’s only win against Oklahoma State.

Mar. 6, 2010: Iowa State places second in Big 12 tournament with. The 197-pound Jake Varner and heavyweight David Zabriskie win individual titles. All ten wrestlers placed.

Mar. 20, 2010: Jackson coaches Jake Varner at 197 and David Zabriskie at 285 to NCAA individual championships. Iowa State places third with 75 team points with three All-Americans.

2010: Iowa State finishes season with 13-2 dual record, including a 4-0 conference record. Jackson is named 2010 Rookie Coach of the Year by Amateur Wrestling News magazine.

Mar. 17, 2011: Jackson coaches an undefeated Jon Reader to NCAA championship at 174. Iowa State didn’t have any other All-Americans and finishes 20th in team standings.

2011: Iowa State finishes season with a 9-8 dual record, going 0-4 in conference.

2012: Iowa State finishes season with a 4-13 dual record, going 0-6 in conference. Iowa State only sends five to NCAA championships, but all five fail to place.

Mar. 9, 2013: Iowa State finishes second in the Big 12 tournament with 74 team points and seven wrestlers in the finals. The 197-pound Kyven Gadson wins Big 12 title.

Mar. 23, 2013: Iowa State produces three All-Americans and finishes 11th at NCAA tournament.

2013: Iowa State finishes season with a 11-5 dual record, going 3-3 in conference after starting the season 1-3.

Mar. 8, 2014: Lelund Weatherspoon at 184 and Kyven Gadson at 197 win titles at Big 12 tournament. Iowa State finishes third in team standings.

Mar. 20, 2014: Iowa State produces three All-Americans and places 12th at NCAA tournament.

2014: Iowa State finishes season with a 9-7 dual record, going 1-3 in conference.

Nov. 23, 2014: Jackson picks up 50th win at Iowa State in a 22-9 victory over Michigan State.

Jan. 18, 2015: Iowa State defeats No. 6 Virginia Tech, 21-12.

Mar. 7, 2015: Iowa State gets six wrestlers to Big 12 finals. Kyven Gadson wins his third straight Big 12 title.

Mar. 19, 2015: Jackson coaches Kyven Gadson to an NCAA championship at 197. Iowa State which placed 14th in team standings.

2015: Iowa State finishes season with a 11-2 dual record, going 2-1 in conference.

Jan. 9, 2016: No. 18 upsets No. 5 Virginia Tech, 16-14, for the second year in a row.

Jan. 24, 2016: No. 16 Iowa State loses to No. 5 Oklahoma State, 38-3, the worst loss in school history.

Mar. 5, 2016: Lelund Weatherspoon wins Big 12 championship at 174 as Iowa State finishes third

Mar. 17, 2016: Iowa State finishes 12th in team standings at NCAA tournament, producing three All-Americans.

2016: Iowa State finishes season with a 10-6 dual record, going 2-2 in conference.

Jan. 29, 2017: Iowa State loses to No. 1 Oklahoma State, 34-3, Iowa State’s worst loss at home.

Jan. 31, 2017: Iowa State announces Jackson he will resign at the end of the 2016 season after going 1-9.