Burnes (elbow/shoulder) threw a 30-pitch bullpen session in Arizona on Tuesday, Alex Weiner of ArizonaSports.com reports.
Burnes has been sidelined for the entirety of the 2026 campaign while recovering from June 2025 Tommy John surgery and a teres major strain, the latter of which resulted in him being shut down from throwing in early June. The right-hander has been throwing bullpen sessions for approximately two weeks and looks to be on track for a return from the 60-day injured list in early September.