Ullmark (back) has been upgraded to day-to-day and will accompany the Senators on their three-game road trip that begins Sunday in New Jersey.
Ullmark (back) was designated for injured reserve Tuesday, per the NHL media site.
Ullmark (back) didn't practice Sunday and remains week-to-week, according to TSN 1200 Ottawa.
Ullmark (back) will not be with the Senators on their road trip, TSN 1200 Ottawa reports Friday.
Ullmark will serve as the starting goaltender for Sunday's road game against the Oilers, TSN 1200 Ottawa reports.
Ullmark won't be between the pipes for Saturday's road game against Vancouver, according to TSN 1200 Ottawa.
Ullmark will patrol the visiting crease in Vancouver on Saturday, TSN 1200 Ottawa reports.
Ullmark will be between the pipes in Calgary on Thursday, per TSN 1200 Ottawa.
Ullmark will guard the road goal against Seattle on Tuesday.
Ullmark stopped 25 of 27 shots in Saturday's 3-2 overtime win over the Penguins.