Tavares will miss a minimum of three weeks with an oblique strain, David Alter of Sports Illustrated reports.
Muzzin (back) is slated to return to practice Wednesday, David Alter of Sports Illustrated reports.
Tavares will not take part in Tuesday's camp session after suffering an upper-body injury, David Alter of Sports Illustrated reports.
Marner added nine pounds of muscle over the summer, reports Sportsnet.ca, and has impressed his coach and teammates both on and off the ice.
Malgin has impressed coach Sheldon Keefe early in training camp, reports TSN.ca.
Kampf won't be at practice Monday while attending a personal matter, David Alter of Sports Illustrated reports.
Gaudette suffered a shoulder injury and won't be in attendance for practice Monday, Terry Koshan of The Toronto Sun reports.
Samsonov stopped all 16 shots he faced in two periods of a 4-2 exhibition loss to Ottawa on Saturday night.
Jarnkrok started the first day of training camp skating on a line with Auston Matthews and Michael Bunting, reports The Athletic.
Simmonds, who is competing for a roster spot this season, spent the summer trying to speed his game up, reports The Athletic.
Gaudette is skating on a line with John Tavares and Mitch Marner at the start of training camp, per Jonas Siegel of The Athletic.
Muzzin will not participate in the first week of camp due to back discomfort, reports Sports Illustrated.
Samsonov will start the season in a tandem with Matt Murray, reports Toronto Star.
Murray and Ilya Samsonov will split netminding duties early in the 2022-23 season, reports the "a href="https://www.thestar.com/sports/leafs/2022/09/21/leafs-gm-kyle-dubas-is-betting-that-matt-murray-and-ilya-samsonov-are-the-answer-to-the-clubs-goaltending-problems.html">Toronto Star.
Bunting will start the season on the top line with Auston Matthews and Mitch Marner, reports the Toronto Sun.
Amirov is expected to train with the Maple Leafs at some point following his last round of chemotherapy to treat a brain tumor, Lance Hornby of The Toronto Sun reports Wednesday.
Sandin, a restricted free agent, has yet to sign a new contract with the Leafs and will miss the start of training camp, Sportsnet's Chris Johnston reports Wednesday.
Abramov will miss the start of training camp due to a back injury, David Alter of Sports Illustrated reports Wednesday.
Woll (shoulder) will not be available for the start of training camp, David Alter of Sports Illustrated reports Wednesday.
Engvall will be re-evaluated on Oct. 3 to see if he can return from his ankle/foot problem, David Alter of Sports Illustrated reports Wednesday.
Liljegren underwent hernia surgery and will be sidelined for six weeks, David Alter of Sports Illustrated reports Wednesday.
Engvall is reportedly dealing with an undisclosed injury and won't be cleared for the start of training camp, David Alter of Sports Illustrated reports Tuesday.
Liljegren is expected to be sidelined for Leafs' training camp with an undisclosed injury, Sportsnet's Chris Johnston reports Tuesday.
Aston-Reese signed a professional tryout offer with the Maple Leafs on Friday.