The 19-year-old guard had a game-high 18 points on Sunday as the Owls beat the Richmond Spiders, 56-52.
Fernandez was voted tournament MVP.
He and his teammates will now focus on the NCAA Tournament and their first-round meeting with Cornell in the East Region later this week.
“We have sure goals and we achieved one, winning the Atlantic 10,” Fernandez said.
“Now we really want to play that first-round game.
“It’s been two years in a row Temple can’t get past that, so it’s our job to put Temple in that second round.”
Fernandez represented Argentina last year at the FIBA U19 World Championship in New Zealand and averaged 8.4 points, 3.6 rebounds and 3.6 assists per game as the South Americans finished fifth.
He is expected to be in Sergio Hernandez’s preliminary squad for this year’s FIBA World Championship in Turkey, where Argentina will face Serbia, Australia, Germany, Angola and Germany in Preliminary Round Group A.