What is the question, could he pace himself correctly and fight 15 rounds?
Of course he could.
Against Guinn, he could have fought 15 rounds, and so could have guinn.
Are you asking if he could carry his KO power into those later rounds?
As a heavyweight, he does not have KO power, so he is content to win on points, and he consistently does more than his opponent every round.
I will go out on a limb and say that Toney would have won rounds 13, 14 & 15 against Guinn.
Of course he could.
Against Guinn, he could have fought 15 rounds, and so could have guinn.
Are you asking if he could carry his KO power into those later rounds?
As a heavyweight, he does not have KO power, so he is content to win on points, and he consistently does more than his opponent every round.
I will go out on a limb and say that Toney would have won rounds 13, 14 & 15 against Guinn.
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