Frank Mir vs. Todd Duffee main event for UFC Fight Night in San Diego

The proposed heavyweight matchup between former champion Frank Mir and Todd Duffee is officially the main event for the UFC Fight Night card in San Diego on July 15.

UFC officials confirmed the fight Wednesday on "UFC Tonight."

Duffee had been targeting Mir for a fight for the past few weeks as he tried to find an opponent who would allow him to finally crack the top 15.

With a majority of fighters already booked, Mir was the lone name available so Duffee began a social networking campaign to land the fight and now he’ll get his wish.

The American Top Team Fighter has won his past two trips to the Octagon with both bouts ending by way of first-round knockout.

Mir accepts the fight after holding out hope that he would face former heavyweight champion Brock Lesnar later this year, but Lesnar decided to officially retire from MMA for good when he signed a new contract to continue performing for World Wrestling Entertainment.

With Lesnar unavailable, Mir opted for the Duffee fight and now he’ll look to get his second win in a row after knocking out Antonio "Bigfoot" Silva in February.

UFC Fight Night: Mir vs. Duffee goes down from the Valley View Casino Center on Wednesday, July 15 on FOX Sports 1.