Brannstrom (undisclosed) will not be in the lineup for Friday's clash with the Rangers, Hailey Salvian of The Athletic reports.
Namestnikov (lower body) will miss at least a week due to a tailbone injury, Bruce Garrioch of the Ottawa Sun reports.
Goloubef (undisclosed) won't play Friday against the Rangers.
Zaitsev returned to Russia for personal reasons and will miss Friday's matchup with the Rangers.
Jaros was promoted from AHL Belleville on Friday and will suit up against the Rangers.
Nilsson will get the starting nod against the Rangers at home Friday.
Ottawa placed Namestnikov (lower body) on injured reserve Friday, Steve Lloyd of TSN 1200 Ottawa reports.
Ottawa recalled Lajoie from AHL Belleville on Friday.
The Senators recalled Beaudin from AHL Belleville on Friday.
Zaitsev collected an assist and finished with a plus-2 rating in a 2-1 overtime win versus Montreal on Wednesday.
Pageau scored his 13th goal of the season during a 2-1 overtime win versus the Canadiens on Wednesday.
Tkachuk scored the overtime winner in Wednesday's 2-1 win over the Canadiens.
Anderson made 35 saves during a 2-1 overtime win versus the Canadiens on Wednesday.
Namestnikov suffered a lower-body injury during Wednesday's game against the Canadiens and won't return.
Brannstrom (undisclosed) won't play in Wednesday's game against the Canadiens, Bruce Garrioch of the Ottawa Sun reports.
Anderson will guard the road net in Wednesday's clash against the Canadiens.
Ryan will take a leave from the Senators in order to participate in the league's player assistance program, the NHL and NHLPA announced Wednesday.
Brannstrom got "dinged up" in practice Monday and won't play Tuesday against the Red Wings, TSN 1200 reports.
Nilsson will guard the road cage in Tuesday's matchup against the Red Wings.
Veronneau was promoted from AHL Belleville on Monday.
Anderson made 28 saves in a 4-2 loss to Buffalo on Saturday.
Chabot collected his 10th assist of the season in a 4-2 loss to Buffalo on Saturday.
Duclair put home his seventh goal of the season Saturday in a 4-2 loss to the Sabres.
Sabourin (head) has started working out again, although he still hasn't skated, Bruce Garrioch of the Ottawa Sun reports.
Brannstrom posted a power-play assist in Friday's 2-1 win over the Flyers.