Alistair Johnston's Substitute Appearance Cut Short Due to Injury

• Alistair Johnston, a 28-year-old Canadian right-back, felt discomfort during his substitute appearance in Celtic's match against Hibernian.
• Johnston's appearance, which lasted 21 minutes, was cut short due to the injury.
• The defender had been out since early August due to a recurring hamstring injury.
• Johnston missed most of last season due to hamstring issues.
• Celtic won the match against Hibernian with a score of 2-1.