Lionel Messi will attempt to win his first-ever World Cup on Sunday, but win or lose, the Argentinian soccer legend is one of the greatest athletes ever, according to fellow countryman, UFC star Santiago Ponzinibbio ... who compared him to America's most legendary athletes.
"I think it's Michael Jordan, these kind of guys. Legends of the sport, all-time. I think Messi is on this level. Michael Jordan. Tom Brady," Ponzinibbio told us, before also throwing out Muhammad Ali's name.
FYI, Santiago, who's coming off a UFC 282 win over Alex Morono, is from La Plata, Argentina .