Impact One Night Only: March Breakdown was a professional wrestling pay-per-view (PPV) event produced by Impact Wrestling and Border City Wrestling released exclusively on Global Wrestling Network. It took place on March 3, 2018 at the St. Clair College Gymnasium in Windsor, Ontario and aired on March 16, 2018.
- Numbers in parentheses indicate the length of the match.
- (c) refers to the champion(s) heading into the match.
- Jake Something (c) & Phil Atlas defeated Aiden Prince & Brent Banks (c) to win the BCW Can-Am Tag Team Championship
- Matt Sydal (c) defeated Petey Williams and Trevor Lee in a Three-way match to retain the Impact X Division Championship