PHOTO GALLERY: Callum Johnson defeats Bartlomiej Grafka

Callum Johnson won his 11th straight professional fight on Saturday night, defeating Bartlomiej Grafka.

The Pole’s corner threw the towel in midway through the second round following the Boston boxer’s dominant display.

Callum Johnson in action against Bartlomiej Grafka.

Callum Johnson in action against Bartlomiej Grafka.

Unbeaten Johnson hardly broke a sweat as his outfought his opponent in Grantham.