EKATERINBURG--Evgeny Tishchenko remains unbeaten as a pro, doing so with very little effort in his most recent outing.

The locally-based 2016 Olympic Gold medalist tore through Scotland's John McCallum, scoring a 2nd round knockout in their heavyweight headliner Saturday evening at RCC Boxing Academy in Ekaterinburg, Russia.

Tishchenko floored McCallum with a body shot towards the final minute of the round, with the Scot foolishly attempting to rise as referee Victor Panin reached the count of ten at 2:07 of round two.

WBO #7 and IBF #10 cruiserweight Tishchenko, a lanky (6'5'') southpaw boxer-puncher, was trying to add the WBO European 200lb title to his already owned WBO I/C belt. McCallum, a stocky strongman from Edinburg—couldn't have entered his first fight outside of the United Kingdom as a bigger underdog. All of his wins have cone against fighters with losing records, and his only (stoppage) loss came to a fighter with a record of 6-0-1.

Tishchenko controlled McCallum in the first with his crisp jab, smartly boxing outside of his opponent. McCallum was brave but it didn't help him much. In the second, Tishchenko landed a picturesque left hand to the liver of McCallum, and down he went. McCallum took a knee but started to get up not until referee Victor Panin was shouting "ten". The referee waved it off at 2:07 to a mild dismay of McCallum, who had none but himself to blame, although he had very slim chances against Tishchenko anyway.

The Russian giant is now 8-0 (6 KOs), closing the show, which saw four consecutive second-round stoppages after five straight decisions.

One-time Deontay Wilder conqueror Evgueny Romanov (15-0, 11 KOs) retained his WBO Global heavyweight title with an easy second-round TKO of badly faded former WBO champion Sergey Lyakhovich, who drops down to 27-9, 17 KOs.

WBO #9 Romanov, 35—who owns an amateur win over Wilder—waited for his opponent in the first but the 44-year old Belarusian could hardly offer little other than some lazy jabs to try keep Romanov at bay. The Russian was indeed at bay but only because of his slow-starting habit. He got back to workin the second and soon put Lyakhovich (just 2-5 over the last ten years) in trouble. He connected with a hard right hand, which was well felt by the White Wolf despite a high guard, then followed it up with a wicked left hook, which rocked Lyakhovich, and got the job done with a right hook to the spleen, while the former champ was already getting down. Time was 1:38.

WBA #4, WBO #7 and WBC #12 rated light middleweight Magomed Kurbanov (21-0, 13 KOs) continued his latest career revival with a solid second-round stoppage of once world-ranked teammate Dmitry "The Mechanic" Mikhaylenko.

Mikhaylenko, 34, who had a very successful stint in 2014-2016 with wins over Sechew Powell, Johan Perez and Karim Mayfield among others, was just 2-6 after the Mayfield win. Kurbanov, 25, on the other hand, scored the first-round kayo of Ilya Ochkin in August, which snapped his five-fight streak of unanimous decisions.

This time, Kurbanov was equally effective. He felt Mikhaylenko out in the first, slowly upgrading his pressure to trouble the Mechanic. In the second, Kurbanov rocked Mikhaylenko with a wicked left hook to the body, cornered him but failed to finish immediately. The end was near though as another left hook to the solar plexus almost doubled Mikhaylenko down. The Mechanic signalized he wasn't willing to go on. Time of stoppage was 1:37. Kurbanov improves to 21-0, 13 KOs.

In a battle of two veteran lightweights, IBF #14 (and once-ranked WBO #1) Roman Andreev (24-0, 17 KOs) remained undefeated with a devastating knockout of former contender and fellow counterpart Pavel Malikov (16-3-1, 6 KOs) in an important cross-roader.

Andreev, 34, hasn't fought for a year and a half, and it has affected him early on. Malikov, also 34, was a notch faster and landed combinations being aggressive as usual albeit against a bigger opponent. One of the punches reddened the face of Andreev, who lost the first one. However, in the second round the undefeated fighter slowly worked his way in. Late in the second, both fighters clashed in an exchange and landed punches of his own but Andreev's punch was way harder, putting Malikov down in a delayed fashion. Pavel was conscious but his legs gave up, and he failed to beat the count of ten. Time of stoppage was 2:50 of the second round.

Roman Andreev is next set to fight Malikov's penultimate conqueror Zaur Abdullaev (who stopped Malikov in August) in one of major sanctioning body's eliminators.

Ukrainian/Armenian import Zoravor Petrosyan (10-0, 4 KOs) scored an important road upset over once-beaten Uzbek Ravshanbek "The Prince" Umurzakov (10-2, 7 KOs) with an eight-round unanimous decision over eight hard-fought rounds.

Petrosyan didn't waste much time adapting for his counterpart. The Ukraine-based Armenian easily exposed Umurzakov's defensive flaws, especially when the latter remained idle after releasing his own offensive. Petrosyan rocked Umurzakov in round one and continued to look better in the exchanges due to better reflexes and greater speed. Umurzakov, a hard-punching lightweight, did his best to connect with meaningful punches of his own but couldn't land cleanly enough. The Uzbek Prince has lost for the second consecutive time.

21-year old super bantamweight Oleg Lyashkov (7-1, 1 KO) scored an eight-round unanimous decision over dangerous Kazakhstani Yerzhan Zalilov (11-3-1, 5 KOs) in a significant step-up fight. Lyashkov, not a bug puncher but strong and determined, pressed the action against Zalilov and remain one step ahead of his stubborn challenger. Zalilov's face was red by the end of the opening stanza, and he continued to bleed from several cuts in later rounds. The ringside physician was called in round seven to examine Zalilov, who was on the brink of dismissal but was allowed to go on. It hasn't reflected the flow of the fight as Lyashkov won all but (arguably) one round.

Hard-punching Russian light heavyweight Vasiliy Voytsekhovskiy (5-0, 2 KOs) dominated his defensively-minded opponent Vadim Sitner (2-1, 2 KOs) over eight rounds. Sitner did very little offense though looked solid in the trenches. Voytsekhovskiy looked better in every department and rightfully was awarded a unanimous decision.

Uzbekistan-born lightweight Dmitry Yun (5-0, 1 KO)—who officially resides in Thousand Oaks, California in the United States and and competes under the RCC / German Titov Promotions—scored a hard-fought majority decision against fellow Uzbek challenger Sherzodjon Abdurazzokov (1-1) over six rounds. Yun was slow and out of shape early on but gradually worked his way back to the fight and took the end of it.

In a two-way, fan-friendly scrap, light welterweight Oganes Ustyan (4-0, 2 KOs) was lucky to escape with a questionable split decision against determined Russia-based Tajik Ramazon Alimatov (0-2). Ustyan was putting way too much into his punches in early rounds and gassed out by the mid-point, losing the six-rounder.