Joffrey Lupul and Colton Orr are not skating on the first day of on-ice activity at the Leafs training camp because of injury.

Lupul missed practice with back spasms and Orr with a leg bone bruise the team said. Lupul is considered "day-to-day" while the Maple Leafs said Orr will not skate for a week.

Lupul had been taking part in informal skates at the Maple Leafs’ practice facility. The 29-year-old left-winger missed all but 16 regular-season games last year because of a broken right arm and a concussion.

Lupul is in the first year of a five-year US$26.25-million contract signed in January.

Orr played in 44 of the Maple Leafs’ 48 games last season and had a league-high 155 penalty minutes.