The Crusaders could lose hooker Corey Flynn and halfback Willi Heinz for an extended period in Super Rugby if their injuries prove to be as bad as thought.
Crusders hooker Flynn suffered what is a suspected fractured eye socket in the first half of their 14-13 victory over the Stormers on Saturday.
Flynn needs to have a scan on the eye socket to confirm the extent of the damage which could need surgery and rule him out for months.
"It was only after the game that they realised something wasn't quite right," coach Todd Blackadder told Fairfax NZ News.
"He talked about some discomfort at halftime but it didn't seem too over the top at the time."
Flynn was replaced by Ben Funnell in the 53rd minute of the victory over the Stormers and could be in line for a lot more game time.
Halfback Heinz suffered a calf muscle injury and coach Blackadder is not too hopeful of seeing him back in Super Rugby in the near future given how the injury sounds.
"He's pulled his calf and it sounds like a serious one. That means Mitchell (Drummond) will come in."
The Crusaders have only played three matches and already their injury list looks like they are much further into the season.
On the list already are flankers Richie McCaw (fractured thumb) and George Whitelock (strained adductor muscle), centre/wing Adam Whitelock (hamstring).
On the positive side winger Nafi Tuitavake could recover in time to play against the Rebels in Melbourne on Friday.
Coach Blackadder has hinted at making changes to his backline as it has failed to produce the edge needed. In particular centre Reynold Lee-Lo could be moved as he has failed to bring the form he showed for the Hurricanes.
"It's certainly something we discussed after the game," Blackadder said of a potential midfield reshuffle.
"It's one area we don't feel we are over-comfortable with at the moment.
"There is a little pressure on there. Rey's playing reasonably OK but we're just not getting that punch we need."
"I think that is with the team not yet playing with a lot of confidence right across the board."
Ryan Crotty could move out to centre which would see Colin Slade and Tom Taylor filling the No 10 and 12 positions and Dagg shifting back to his regular position of fullback after being played on the wing.