Pitkanen's arrival should provide a major boost to Edmonton's
power play, which ranked fourth-worst in the league last season.
The 23-year-old had career highs with 39 assists and 43 points in
77 games with the Flyers last season.
"Joni is a talented young defenseman with a proven track
record," Oilers general manager Kevin Lowe said in a statement.
"He possesses the offensive skills we have been seeking on the
blue line and look forward to having him in the lineup."
Sanderson, a two-time All-Star, had 11 goals and 18 assists in
58 games with Philadelphia last season.
Lupul, acquired in the trade that sent defenseman Chris Pronger
to Anaheim last offseason, leaves his hometown team after a
disappointing season with 16 goals, 12 assists and a team-worst
minus-29 in 81 games.