Khan unfazed by lack of power.

[Fenster]

The 19-year-old has recorded six stoppages in his six pro bouts thus far, but has yet to record a knock-out.

He's had 6 stoppages in 8 fights.

How many fighters are true KO artists?

For the level he's at he hits plenty hard enough....I'm sure as he improves, matures and refines his style he'll hit even harder.