Here is the highlights for Frank Martin: https://www.youtube.com/watch?v=y_oVTxr_mRg
He is good, no doubt about it and he was being trained by Derrick James. But I do think that he hasn't fought a opposition as smart as Shakur is. He is a southpaw and Shakur has a good record fighting lefty.
On offense he is good but his chin was never tested and no one he fought are hard puncher All that he fought were patsies and low-level fighters Frank Martin will be in the biggest surprise of his life when suddenly he finds himself an opponent who can take a punch who can counter who can allude a punch.
I don't see this fight any different from fighters Shakur fought in the past, but he needs to look impressive here if he wants Haney he will be in line for major titles even title unification if he knocks out a fighter with an impressive record, even though the record is not something you can all A level record.
It's a matter of who has the better offense because Shakur isn't a big KO threat. We can expect that his opponent will survive the full 12 rounds. He only has a 50% KO rate, so I think Martin will be able to go the distance. However, I doubt if Martin can outscore Shakur since the latter boxes like Mayweather, who is hard to hit due to his quickness and high ring IQ.
I guess that is the only advantage of Frank Martin because he will have a full 12-round chance because Shakur is not that type of boxer who has a devastating knockout power. After that, it falls on him alone if how will he outsmart Shakur inside the ring because if we're talking about chances, Shakur will always have an upper hand even against boxer who is a KO artist because he can think clearly what to do and uses his speed to avoid punches that could ended a fight much sooner.