Koivula got a nasty cut above the left eye at the end of round 8 and TKO win was given for Martinez at the beginning of round 9. Doctor stopped the fight after taking a look at the cut.
Martinez looks decent but old. He never dominated the Finn, who is a veteran himself and a natural welter stepping up to middleweight for this fight. Was stopped by Conor Benn in his last fight.
Unless Martinez improves significantly over the next months, he should box exhibition fights only, and forget about going for a world title belt. Unfortunately, he looks like a shadow of his former self.