• World Baseball Classic schedule, tickets
Though they'll play in separate groups -- Canada in Pool C and Venezuela in Pool D -- both could advance to the second round's Pool F, which will take place at Petco Park from March 14-19.
"If they're interested in doing it, we're supportive of the WBC," Padres manager A.J. Preller said earlier this offseason at the General Managers Meetings. "It's really good for the game. I've enjoyed watching it over the years, scouting it. Anything that grows the game is important. If they're lucky enough to be selected, it's an honor."
Chacin, who came to San Diego after spending last season with the Angels and Braves, is expected to start for Venezuela, but he could serve in a bullpen role as well.
Naylor, the Padres' No. 4 prospect, is a 19-year-old first baseman with an impressive bat. If he reaches the second round, he'd be playing in Petco Park for the third time in less than a year. Naylor took part in the All-Star Futures Game in July and the Padres Futures Game in October. He combined to go 4-for-7 with a homer, a double and four RBIs.
Romak was acquired as a Minor League free agent this offseason. The 31-year-old utility man -- who can play both corner-infield and outfield spots -- spent last season playing in Japan. His last big league experience came in 2015 with the D-backs.
AJ Cassavell covers the Padres for MLB.com. Follow him on Twitter @ajcassavell. This story was not subject to the approval of Major League Baseball or its clubs.