The 21-year-old Nash, 21, the No. 1 pick in the 2002 draft, injured his knee when he was hit in the third period of Thursday night's 2-1 loss in Calgary. He has played in three of Columbus' 14 games this season after spraining his right ankle in training camp.
The initial diagnosis indicates the latest injury is a sprain, team spokesman Todd Sharrock said. Nash will have an MRI after the club returns home following Friday night's game in Vancouver, Sharrock said.
Nash tied for first in the NHL with 41 goals in the 2003-04 season. He has 58 goals and 38 assists in 157 career games.
In recording a 4-3 overtime victory over Detroit, Bergeron suffered a fractured finger on his left hand when blocking a shot in the third period and Cross suffered a sprain of the medial collateral ligament of his left knee.
Bergeron, who finished second in scoring among defensemen for the Oilers in 2003-04 with 26 points, had four goals and seven points in 14 games this season. Playing in his second full season with Edmonton, Cross has notched three assists and four points in 12 games.
The Oilers recalled defensemen Dan Smith and Dan Syvret from AHL Hamilton. Smith had one assist and eight penalty minutes in nine games with the Bulldogs, while Syvret assisted on one goal in six games.
Toskala, the Sharks' backup goalie in 2003-04, has been out since Oct. 26 with a groin injury. Starter Evgeni Nabokov, who had a recent setback in his recovery from an early-season shoulder
injury, is also on injured reserve, leaving minor-leaguers Nolan Schaeffer and Dimitri Patzold in goal for San Jose.
Bernier, a promising power forward who was the 16th overall draft pick in 2003, has four goals and six assists in just nine games with Cleveland in his first year in the AHL. He was expected to make his NHL debut Friday night at Anaheim.
The move was a hedge against the possibility of left winger Geoff Sanderson's knee injury being more serious than a bruise. Sanderson had to be helped off the ice Thursday night after taking a shot by teammate David Tanabe late in the second period.
If Sanderson is unable to play by Saturday night, Gainey will be available to take his place in a game at Detroit.
Gainey has played in 13 NHL games -- all with Dallas from 2000-04. The Stars traded him to Philadelphia on Feb. 16, 2004, but he did not play for the Flyers.
Information from The Associated Press and SportsTicker was used in this report.