Round 1: Sarutobi vs Senju
Asuma when he was a Fire Temple Guardian, before getting his Energy Blades
Tobirama when he was fighting against Izuna, before developing ET and FTG
Round 2: Will of Fire vs Hokage
All abilities, but living versions
Round 3: Beyond the borders of Life and Death
As reanimations, both have sealing tags
Asuma can channel his wind energy around a target to immobilise them
Tobirama can place multiple FTG tags on a target, then teleport them to the same position to crippled and immobilise them
Stipulations:
Full knowledge
No prep
Asuma when he was a Fire Temple Guardian, before getting his Energy Blades
Tobirama when he was fighting against Izuna, before developing ET and FTG
Round 2: Will of Fire vs Hokage
All abilities, but living versions
Round 3: Beyond the borders of Life and Death
As reanimations, both have sealing tags
Asuma can channel his wind energy around a target to immobilise them
Tobirama can place multiple FTG tags on a target, then teleport them to the same position to crippled and immobilise them
Stipulations:
Full knowledge
No prep