Khabib Nurmagomedov moving to the top of the UFC's pound-for-pound rankings is "number one bulls***", according to Jon Jones.
Jones lost his place at the top of the rankings to Khabib after the undefeated lightweight champion unified the division with a second-round submission of Justin Gaethje at UFC 254 last weekend.
The Russian announced his retirement in the immediate aftermath and called on the UFC to give him the honour of being named the best pound-for-pound in the organisation.
His desire was granted on Tuesday and former light-heavyweight king Jones was not impressed at losing his spot.
"This is number one bulls***," Jones wrote on Twitter.
"Unanimous decision over last-minute replacement Al Iaquinta to become champion.
"Conor McGregor is the only opponent he's ever had that the general public actually knew. Catapulted my man to becoming the best ever, this is hilarious."
Khabib won the lightweight title against Iaquinta in April 2018 after Tony Ferguson withdrew through injury and his replacement Max Holloway was deemed medically unfit on weigh-in day.
However, he went on to mount successful defences against McGregor, Dustin Poirier and Gaethje before hanging up his gloves with a 29-0 record.
Jones improved to 26-1, with one no contest, by defeating Dominick Reyes last February, setting a UFC record with his 14th title fight win.