- On This Day in Moto: September 14September 14, 2018Jeffrey Herlings loses the FIM MX2 Motocross World Championship to Jordi Tixier, the Czechoslovakian team wins the Motocross of Nations, and more.
- On This Day in Moto: September 13September 13, 2018Team USA earns its first of 13 straight wins, the Motocross of Nations sees its U.S. debut at Unadilla, and more.
- On This Day in Moto: September 12September 12, 2018Danny Chandler becomes the only rider in Motocross and Trophee des Nations history to sweep all four motos in a single year, Team USA snags its 13th straight win, and more.
- On This Day in Moto: September 11September 11, 2018The FIM Trophee des Nations is dominated by the Americans for a third year in a row, Ricky Carmichael caps off his third undefeated season, and more.
- On This Day in Moto: September 10September 10, 2018Ricky Carmichael has the worst race of his career at Glen Helen, Belgium wins the Motocross of Nations for the first time in 15 years, and more.
- On This Day In Moto: September 9September 9, 2018Gary Jones gives Honda its first AMA Motocross title, Grant Langston captures the 2007 AMA National Championship, and more.
- On This Day In Moto: September 8September 8, 2018Team USA wins the 1985 Motocross des Nations and Ryan Dungey completes a historic season with a win in the 450 Class at Lake Elsinore.
- On This Day in Moto: September 7September 7, 2018Saddleback Park closes its doors, Jim Pomeroy becomes the first American to win a moto at the Trophee des Nations, and more.
- On This Day in Moto: September 6September 6, 2018Jean-Michel Bayle competes in his last professional race, Team USA earns its 12th straight win in Australia, and more.
- On This Day in Moto: September 5September 5, 2018Robbie Reynard becomes the youngest rider ever to win an AMA Pro Motocross race, Danny "Magoo" Chandler goes 1-1 at the FIM Trophee des Nations, and more.
- On This Day in Moto: September 4September 4, 2018Broc Hepler takes a hometown win in Pittsburgh, Ricky Carmichael marches toward his third undefeated season, and more.
- On This Day in Moto: September 3September 3, 2018Jeremy McGrath wins the only outdoor championship of his career, Tim Gajser wraps up his first MXGP world title, and more.