After a busy first few hours of free agency at the NHL level, things turned up at the American Hockey League level, as the Oilers signed a veteran AHL defenseman and lost the AHL's top scorer from last season.
The Oilers signed 27-year-old Corey Potter to a one-year, two-way contract. But shortly after that signing was announced, the Pittsburgh Penguins signed Colin McDonald to a similar contract.
Potter is likely to spend time with the Oklahoma City Barons after playing 75 games with Wilkes-Barre/Scranton and one with Pittsburgh last season.
In the AHL, Potter scored 37 points (7 goals, 30 assists), had 52 penalty minutes and was plus-25.
Potter, who has appeared in 321 career AHL games, was a fourth-round pick by the Rangers in 2003.
McDonald, 26, led the AHL with 42 goals and added 16 assists in 80 games for the Barons last year after signing an AHL deal with the Oilers last offseason.
Earlier on the opening day of hockey's free-agent period, the Oilers signed center Eric Belanger, left wingers Ben Eager and Darcy Hordichuk and defenseman Cam Barker. They also traded Kurtis Foster to Anaheim in exchange for defenseman Andy Sutton.