Tiedemann (forearm) will undergo Tommy John surgery Tuesday, Keegan Matheson of MLB.com reports.
Tiedemann (forearm) will receive a third opinion from Dr. Neal ElAttrache, Kaitlyn McGrath of The Athletic reports.
Tiedemann (forearm) will go for a second opinion after imaging Friday showed no structural damage, Keegan Matheson of MLB.com reports.
Testing showed Tiedemann didn't sustain any structural damage in his forearm or elbow, Scott Mitchell of TSN.ca reports.
Tiedemann (elbow) struck out five over 2.1 scoreless, no-hit innings in a rehab start for Single-A Dunedin, Keegan Matheson of MLB.com reports.
Tiedemann (elbow) retired one batter via strikeout and gave up three earned runs on two hits and two walks in his rehab start Friday in the rookie-level Florida Complex League.
Tiedemann (elbow) will make a rehab start with the Blue Jays' Florida Complex League affiliate Friday, Sam Dykstra of MiLB.com reports.
Tiedemann (elbow) threw a live batting practice session Friday and could begin a rehab assignment this week, Shi Davidi of Sportsnet.ca reports.
Tiedemann threw a 20-pitch live BP session Friday at Triple-A Dunedin, Arden Zwelling of Sportsnet.ca reports.
Tiedemann (elbow) is back on a mound and throwing bullpens according to Blue Jays general manager Ross Atkins, Scott Mitchell of TSN.ca reports.