Maia and Santiago are both coming off of losses, although Santiago's (a knockout against Brian Stann) was certainly a lot more decisive than Maia's close decision loss to Mark Munoz. Although both men are BJJ black belts, Maia is certainly a much higher-level grappler than Santiago, while Santiago's striking game is more developed than Maia's, although Maia did show marked improvement in his stand-up against Munoz, so this should be an interesting fight.
Demian Maia (14-3)
Loss Mark Munoz (unam. decision) - UFC 131
Win Kendall Grove (unam. decision) - TUF 12 Finale
Win Mario Miranda (unam. decision) - UFC 112
Loss Mark Munoz (unam. decision) - UFC 131
Win Kendall Grove (unam. decision) - TUF 12 Finale
Win Mario Miranda (unam. decision) - UFC 112
Jorge Santiago (23-9)
Loss Brian Stann (TKO - punches) - UFC 130
Win Kazuo Misaki (TKO - corner stoppage) - Sengoku 14
Win Mamed Khalidov (unam. decision) - Sengoku 12
UFC 136 coverageLoss Brian Stann (TKO - punches) - UFC 130
Win Kazuo Misaki (TKO - corner stoppage) - Sengoku 14
Win Mamed Khalidov (unam. decision) - Sengoku 12