Still, Pacquiao dominated the later rounds and had Horn wobbling at the end of the 9th.
"Thank you for the support and for also believing that I won the fight", he said in the TV interview.
It was only the seventh defeat in 68 career fights for Pacquiao, who said afterwards: "Very tough".
Pacquiao's trainer Freddy Roach called for an investigation into the scoring of the fight.
New world champion Jeff Horn has been challenged to defend his title against Chris van Heerden.
Jeff Horn, an ex-schoolteacher from suburban Brisbane, just gave Australian sport one of its greatest moments.
"I'm going to have to have a long talk with Manny and discuss this, see how he feels and I'm going to give him my feelings on it too because I'm a little bit in the middle right now".
World leaders pay tribute to German unifier Helmut Kohl
Kohl's "legacy in Europe is enormous", he said, adding he was speaking primarily as a friend of the German political giant. An orchestra played both the German national anthem and Beethoven's Ode to Joy, the anthem of the European Union.
Pacquiao's close loss to Horn had Roach contemplating if his ward is done being a boxer. At 38, it was exactly the fight he didn't want. At 29, unheralded, unrated and flat-out laughed out by American pundits, Horn stunned the boxing world.
"Jeff executed beautifully and it just went pretty much how I thought it would go", said Rushton.
"Justin Fortune said the only way Pacquiao could lose the fight is if he tripped on the way to the ring. I can tell you if he fights Jeff Horn again, Jeff will beat him much more convincingly next time". That's a little disrespectful.
"The other (male) American judge (Flores) - and this was quite a shock to me - I had never heard of, it really takes a lot to come up with a championship level judge from the United States I've never heard of, that's nearly impossible to do", Rafael told the Big Sports Breakfast radio show.
"From the beginning, we knew Pacquiao was in for a rough night because the kid (Horn) was packing heat". In fact, he said that he had thrived on the extra pressure of fighting in front of the 50,000+ crowd. Where? Show me how you came up with that score.'"There will always be a backlash where people say I got lucky, or whatever".
Whether you agree with the decision or not, Horn fought far better than many had imagined he could and proved to the boxing world he was a capable fighter with a bright future. You could sense that he was willing to do whatever it took to get the victory.
"I have a lot to do with the school still", he said. We should be celebrating his determination and grit - and his stunning achievement.
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