MOSCOW, Jan 2 Cuban boxer Luis Ortiz defeated American Charles Martin in the ranking A heavyweight bout in the U.S. The bout ended with a TKO in the sixth round. The fight was held under the auspices of the International Boxing Federation (IBF). Ortiz is 42 years old, he fought 35 fights and won 33 (28 by knockout). Martin is 35 years old, he lost in three fights out of 32.