Edmonton called up forwards Teemu Hartikainen, Magnus Paajarvi and Chris VandeVelde and defenseman Colten Teubert for training camp, which started Sunday.
The Oilers have 25 players in camp. They must trim their roster to 23 before they open a revamped 48-game season next week.
Hartikainen and Paajarvi are projected to make the Oilers' roster while VandeVelde and Teubert most likely will be reassigned to Oklahoma City.
HARTIKAINEN'S FINAL GAME IN OKC?
Hartikainen is one of only seven players that have played at least one game in all three Barons seasons. Projected to stick with the Oilers all season, Hartikainen might have played his final game at the Cox Convention Center Saturday night.
“It's been great for me,” Hartikainen said. “I have a lot of good friends here. I got a lot of ice time my three years here, including the power play. I scored a lot of points in this building. It's been a great feeling, some really good memories.”