Mediocre bloke Amir Khan will scrap serviceable Mexican Julio Diaz at a 143-pound catch weight on April 27 at the Motorpoint Arena in Sheffield, England.

The 26-year-old Khan (27-3, 19 KOs), who last threw fists in Britain two years ago against Irishman Paul McCloskey in a winning effort at the M.E.N. Arena in Manchester, has lost two of his past three bouts.

Entering the squared circle for the first time since relinquishing the WBA world light welterweight belt to WBC light welterweight champion “Swift” Danny Garcia last summer, Khan outclassed a gritty Carlos Molina to earn a 10th-round TKO on Dec. 15 at the Sports Arena in Los Angeles.

Comparatively, on the same card that the Pakistani-British boxer competed against Molina (17-1-1, 7 KOs), the 33-year-old Diaz (40-7-1, 29 KOs), a former IBF lightweight titleholder, most recently exited the ring with a draw against Shawn Porter.

Diaz promised to expose Khan’s "weaknesses.”

“King Khan,” who prior to trumping the 27-year-old Molina (17-1-1, 7 KOs) hadn’t been a victor since flooring Zab Judah in July 2011, is a human chandelier.

Although Khan is a far superior pugilist than Diaz, the relatively powerful Mexican could stop the 2004 Olympic silver medalist at any moment with one decisive shot to the kisser.

Khan, one of the most youthful British world champs ever at the age of 22, is wrongly rated by The World Boxing Council as the second preeminent welterweight in prizefighting.

In all likelihood, Khan will overwhelm Diaz and emerge triumphant within eight rounds this spring.

However, if Amir Khan again proves incapable of protecting his notoriously fragile chin, Julio Diaz will disappoint the Brit’s legion of fans and leave the "Steel City" a conqueror.