2 of the 3 judges gave you round 1. In rd 3, there's a lot going on. Your opponent had 2 clinches that took over half the round. I think your fighter likely scored more in the stand up, but the combo of clinch and standup may have given your opponent the round. One thing to keep in mind, fights can have a "human" element to them, meaning decisions can be head-scratchers at times. I recall there being something on the old wiki that said something to the effect of "don't let the fight go to the scorecards" if you're worried about getting hosed. Bad decisions happen.