I've only seen Lyakhovich against Brewster(great fight by the way) and I don't think Briggs will knock
him out. L. has a great chin and I doubt that Briggs is a bigger puncher than Brewster...
If Briggs comes in as heavy as in his last fight against Koval, he may look better in the first 3 or 4 rnds,
then L. will take over and either ko Briggs or win by points...
If Briggs looses some wait(or maybe better a lot) this might get a pretty competitive fight...