The 42-year old Brazilian first fought for the 205-pound title seven years ago and came up short against then champion Jon Jones. On Saturday, UFC president Dana White strapped the belt around his waist.
Blachowicz landed first with a hard leg kick. Teixeira quickly changed levels and put Blachowicz on his back. Teixeira delivered punches and elbows to the body and head inside the closed guard of Blachowicz. Teixeira spent nearly the duration of the round in top position easily winning the opening frame.
In the second round, the two exchanged early. Teixeira looked to get the fight to the ground, but Blachowicz defended the attempt. Blachowicz started letting his hands go and Teixeira tied him up in the clinch. Blachowicz successfully defend a second takedown attempt. Teixeira wobbled Blachowicz with a hook and secured a takedown midway through the frame.
Teixeira advanced to the mount position and Blachowicz gave up his back. Teixeira flattened Blachowicz out and locked on a rear-naked choke forcing Blachowicz to tap out.