The Nationals released Urena on Tuesday.
The Nationals reassigned Urena to minor-league camp Monday, Matt Weyrich of NBC Sports Washington reports.
Urena got the start at third base in Saturday's Grapefruit League game against the Mets, going 1-for-2 with a double and a run scored.
Urena signed a minor-league contract with the Nationals on Sunday.
Urena was assigned to minor-league camp Saturday.
Urena signed with Toronto as a non-roster invitee Friday.
Urena cleared waivers and was outrighted to Triple-A Norfolk on Sunday, Rich Dubroff of BaltimoreBaseball.com reports.
Urena was designated for assignment by the Orioles on Wednesday.
Urena was claimed off waivers by the Orioles on Friday.