Kashtanov retains interim WBA title

Stanyslav Kashtanov of Ukraine knocked out Jaime Barboza of

Costa Rica in the 10th round Saturday to retain his interim WBA

super middleweight belt in front of a hometown crowd.

Barboza fell to the canvas following a stunning right hook and

had to remove his mouth guard to spit blood as the referee reached

the 10 count 2 minutes, 40 seconds into the 10th.

Kashtanov improved to 31-1 with 17 knockouts. Barboza fell to

18-8 with 8 KOs.

Kashtanov took the title in November last year by beating Server

Yemurlayev of Ukraine by unanimous decision, and this was his first

title defense.

The 29-year-old Ukrainian first knocked the 35-year-old Barboza

to the canvas with a series of body blows near the end of the

seventh round.