Glover Teixeira is disappointed with himself after a loss he’s struggling to explain.

Teixeira (27-7 MMA, 10-5 UFC) dropped a unanimous decision to Corey Anderson (11-3 MMA, 8-3 UFC) on Sunday at UFC Fight Night 134 for what was his second octagon defeat to someone who hasn’t held or challenged for a UFC title. It was a lopsided affair, and the Brazilian was highly frustrated afterward.

Typically Teixeira has answers for himself after falling short of his desired result. This time, though, he said he doesn’t know where things went wrong.

“Congratulations to Corey, he took the fight short notice, but I’ve got to sit back and see what’s going on,” Teixeira said on the UFC Fight Night 134 post-fight show on FS1. “It’s a fight that I am very, very disappointed in. I can’t fight like that. I was feeling great. Last time I fought like that and somebody just dominated was by Phil Davis. But for Phil Davis I have excuses. My weight cut was very bad. This, I have no excuses. I can’t be fighting like this.”

UFC Fight Night 134 took place at Barclaycard Arena in Hamburg. Anderson vs. Teixeira co-headlined the FS1-televised portion of the card following early prelims on UFC Fight Pass.

Teixeira will turn 39 in October and has been in the sport since June 2002. He’s had a long career, but it’s clear he expected more out of himself going into the matchup with Anderson, who took the fight on just 14 days’ notice.

Teixeira didn’t make any definitive statements about his future other than wanting at least one more UFC fight. His tone indicates a fighter who could be pondering retirement, but Teixeira apparently wants to compete again to find out whether he’s still able to hang at the top level.

“I have to sit back and see what’s going on,” Teixeira said. “I need to have another chance in UFC. I’ve got to change some stuff to get another chance in UFC, have another chance in the fight game. If I keep fighting like that – I can’t fight like that anymore. That was a bad fight, a really bad fight.”

For complete coverage of UFC Fight Night 134, check out the UFC Events section of the site.