"The pain was incredible. I could not breathe," the Yorkshireman said after losing the first race in his best-of-three match with Craig Percival.
Jacques, part of the three-man team that gave City of Edinburgh RC the Olympic sprint title here, crashed late on Wednesday, but recovered to win the rerun second-round race before going to hospital.
After losing to Percival, Jacques needed medical assistance at the side of the track, and has "extensive internal bruising". His exit afforded Percival a one-ride route into the last four, where he takes on Steve Paulding, one of two City of Edinburgh semi-finalists.Reuse content