RIO DE JANEIRO –  Rose Namajunas is not putting her defenses down just because of the positive experience she’s had in Brazil so far ahead of UFC 237. Namajunas (8-3 MMA, 6-2 UFC) enters hostile territory Saturday when she puts her strawweight title on the line in the UFC 237 headliner in Rio de Janeiro against Brazil native Jessica Andrade (19-6 MMA, 10-4 UFC). Although the champion and her challenger have displayed a warm relationship ahead of fight night, “Thug Rose” remains on full alert. “My guards are still up high,” Namajunas told MMA Junkie.