Ospreys started their Heineken Cup season with a comfortable 38-17 home bonus point victory over Italian side Treviso in Swansea on Friday.
The Ospreys waited until the death to score the bonus point try as Ashley Beck went over in the last minute of the match.
Eli Walker and Hanno Dirksen, with a brace, scored tries, with fly-half Dan Biggar kicking 18 points at Swansea's Liberty Stadium. Treviso scored two tries through Manoa Vosawai and Luke McLean.
The win was sweet revenge for Ospreys, who had lost 12-6 to the same opponents in the Celtic League earlier this season.
Final Score Ospreys (16) 38 Treviso (3) 17
Tries: Walker, Dirksen 2, Beck
Cons: Biggar 3
Pens: Biggar 4
Tries: Vosovai, McLean
Cons: Burton 2
Richard Fussell; Hanno Dirksen, Andrew Bishop, Ashley Beck, Eli Walker; Dan Biggar, Kahn Fotuali'i; Ryan Bevington, Richard Hibbard, Adam Jones, Alun Wyn Jones (capt), Ian Evans, Ryan Jones, Justin Tipuric, Jonathan Thomas.
Replacements: Rhys Webb , Duncan Jones , Aaron Jarvis, George Stowers , Dwyer, Lewis, Morgan, Isaacs.
Luke McLean; Ludovico Nitoglia, Tommaso Benvenuti, Alberto Sgarbi, Tommaso Iannone; Kristopher Burton, Tobias Botes; Alberto De Marchi, Leonardo Ghiraldini, Jacobus Roux, Antonio Pavanello (capt), Valerio Bernabň, Simone Favaro, Alessandro Zanni, Manoa Vosawai.
Replacements: Fabio Semenzato , Andrea Pratichetti, Ignacio Fernandez-Rouyet , Enrico Ceccato , Pedro Di Santo , Giovanni Maistri , Francesco Minto , Robert Barbieri .