(Courtesy of UFC)
Souza (25-5, 1 NC) is coming off a Performance of the Night win over Derek Brunson in his last outing. A win over Gastelum on May 12 would move Souza closer to a coveted title shot.
Gastelum (14-3, 1 NC) knocked out former champion Michael Bisping in his last outing in November. He heads into enemy territory to take on the Brazilian in Rio de Janeiro.
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