UFC on Fox: Johnson vs. Dodson (also known as UFC on Fox 6) was a mixed martial arts event held by the Ultimate Fighting Championship on January 26, 2013, at the United Center in Chicago, Illinois.

[2][3] A bout between Erik Koch and Ricardo Lamas, previously linked to UFC 155, was moved to this event to bolster the main card.

However, Roberts was forced out of the bout with an illness and was replaced by promotional newcomer Josh Janousek.

With no time to find a suitable replacement for Kuiper, he was pulled from the event as well.

[6] Magnus Cedenblad was expected to face Rafael Natal at the event but was forced out of the bout with an injury and replaced by promotional newcomer Sean Spencer.