Vitaly Bigdash successfully defended his ONE middleweight championship Saturday, turning back the challenge of Aung La N Sang.

The two battled in the main event of ONE Championship 51 from the Jakarta Convention Center in Indonesia.

Bigdash improved to 9-0 in his career with the decision victory. This was his first title defense after winning the belt in October vs. Igor Svirid.

Complete results are below:

Vitaly Bigdash def. Aung La N Sang via unanimous decision to remain ONE middleweight champion

Martin Nguyen def. Kazunori Yokota via TKO (strikes) at 3:36 of Round 1

Vincent Latoel def. Vaughn Donayre via unanimous decision

Georgi Stoyanov def. Saygid Guseyn Arslanaliev via DQ (illegal kick) in Round 1

Anthony Engelen def. A.J. Lias Mansor via KO (strike) at 1:13 of Round 1

Sherif Mohamed def. Igor Subora via unanimous decision

Sunoto Peringkat def. Chan Heng via TKO (strikes) at 2:30 of Round 1

Stefer Rahardian def Jerome S. Paye via unanimous decision

Rene Catalan def. Adrian Matheis via submission (armbar) at 2:08 of Round 2