Ospreys: Dan Evans; Jeff Hassler, Andrew Bishop, Josh Matavesi, Eli Walker; Dan Biggar, Rhys Webb; Nicky Smith, Scott Baldwin, Dmitri Arhip, Lloyd Peers, Alun Wyn Jones (capt), James King, Dan Baker, Sam Lewis.
Replacements: Scott Otten, Duncan Jones, Aaron Jarvis, Rynier Bernardo, Joe Bearman, Justin Tipuric, Martin Roberts, Sam Davies.
Treviso: Jayden Hayward; Angelo Esposito, Luca Morisi, Enrico Bacchin, Ludovico Nitoglia; Joe Carlisle, Alberto Lucchese; Matteo Zanusso, Albert Anae, Rupert Harden, Antonio Pavanello (capt), Tomas Vallejos, Simone Favaro, Francesco Minto, Alessandro Zanni.
Replacements: Davide Giazzon, Romulo Acosta, Salesi Manu, Marco Fuser, Meyer Swanepoel, Marco Barbini, Michele Campagnaro, Edoardo Gori.
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Ospreys: Dan Evans; Jeff Hassler, Andrew Bishop, Josh Matavesi, Eli Walker; Dan Biggar, Rhys Webb; Nicky Smith, Scott Baldwin, Dmitri Arhip, Lloyd Peers, Alun Wyn Jones (capt), James King, Dan Baker, Sam Lewis.
Replacements: Scott Otten, Duncan Jones, Aaron Jarvis, Rynier Bernardo, Joe Bearman, Justin Tipuric, Martin Roberts, Sam Davies.
Treviso: Jayden Hayward; Angelo Esposito, Luca Morisi, Enrico Bacchin, Ludovico Nitoglia; Joe Carlisle, Alberto Lucchese; Matteo Zanusso, Albert Anae, Rupert Harden, Antonio Pavanello (capt), Tomas Vallejos, Simone Favaro, Francesco Minto, Alessandro Zanni.
Replacements: Davide Giazzon, Romulo Acosta, Salesi Manu, Marco Fuser, Meyer Swanepoel, Marco Barbini, Michele Campagnaro, Edoardo Gori.
Referee: Pascal Gauzere (France)
Touch judges: Alexandre Ruiz (France), Jean-Luc Rebollal (France)
Fourth official: Wayne Davies (Wales)
TMO: Daniel Irazoqui (France)
Citing commissioner: Wade Dooley (England)