He defended his title for the seventh time winning by scores of 120-107 and 119-108 twice.
The 37-year-old Golovkin was stripped of the IBF title last year when he failed to make a mandatory defence against Derevyanchenko, opting instead for a rematch with Alvarez
Former middleweight and super-middleweight world champion Benn has not fought professionally for nearly 23 years.
Isus, 21, told television channel bTV, Boris had been using his professional card for eight fights during the past year as he wanted to gain experience before using his own name publically.
Only Lara was eligible to win the vacant title after Alvarez, brother of middleweight king Canelo Alvarez, failed to make weight on Friday by more than four pounds.
The high-profile December 7 duel, dubbed 'Clash on the Dunes', will see Britain's Joshua trying to win back the IBF, WBA and WBO titles he sensationally lost to American fighter Ruiz in New York in June.
US sports broadcaster ESPN is slated to stream the fight, which will take place at an MGM property still to be named.
It's the second time Davis, 21-0 with 20 knockouts, will defend the crown he won by stopping Argentina's Jesus Cuellar in the third round in April 2018. Davis also knocked out Mexico's Hugo Ruiz in the first round last February.
Dadashev, known as "Mad Max", was unable to walk to the dressing room and was immediately hospitalised.
It made the announcement in a post dated Sunday on its official account on Chinese social media platform WeChat.
The 40-year-old Filipino legend wrote another improbable chapter in his glittering career on Saturday, with an age-defying split decision victory over the hitherto unbeaten Keith Thurman.
Pacquiao floored Thurman with an electrifying combination in the first round and remained on the front foot throughout a pulsating 12-round duel.
Filipinos from street vendors to lawmakers went wild, pumping their fists in the air during the first round of the welterweight fight as Pacquiao floored the WBA champion 10 years his junior, and went on to win by split decision.
Filipino icon Pacquiao will be climbing into the ring for the 71st time in what is seen as his most challenging contest since defeat to Floyd Mayweather in 2015's "Fight of the Century."
The 40-year-old Filipino icon clashes with Thurman at the MGM Grand in Las Vegas in what is arguably his most challenging assignment since losing to Floyd Mayweather in 2015.