Bulls limp out of Christchurch
James Mortimer 18 Mar 2013 Getty Images
Akona Ndungane has been in hospital after injuring his eye in the first half, while centre Wynand Olivier suffered a knee injury.
It is unknown at this stage how long both players will be out.
Francois Hougaard has had a foot injury that the Bulls medical team decided would heal more efficiently if the halfback sat out the remainder of the tour.
Spies said at the end of the day the Crusaders were too good in most facets.
"We just couldn't get going" he said.
"They kept us out of our game. In the line outs they were very good. The scrums they also put us under pressure. "
"Also, we couldn't get out of our half. We kept playing in our own half and you can't build any proper momentum so credit to them for that. You've got to give credit to the Crusaders, they were on song tonight and obviously they were desperate for a win."
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