The Ospreys take on Cardiff Blues at the Liberty Stadium on Saturday evening for round one of the GuinnessPRO14 Rainbow Cup, K.O 5:15pm.
The two sides have played each other 35 times with Ospreys coming out on top 24 times to Cardiff Blues 10 and 1 game drawn.
Ospreys have won four of the last half a dozen meetings against Cardiff and six of the previous seven have been settled by single-digit margins of victory.
Referee: Sam Grove-White (SRU)
Assistant Referees: Adam Jones, Mike English (both WRU)
TMO: Jon Mason (WRU)
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