Alun Wyn Jones broke the Ospreys' appearance record celebrating with a 43-0 Guinness PRO14 win over Zebre
Jones took his tally to 233 games to beat the previous record held by former Welsh international prop Paul James.
Luke Morgan scored three tries for Ospreys, Scott Otten and Olly Cracknell one apiece, and there was also a penalty try award. Sam Davies kicked a penalty and two conversions, with James Hook adding two conversions.
Ospreys fielded a strong side containing nearly all of their current Welsh internationals - but the visitors had the first chance for points with Francois Brummer missing an early penalty.
The win means the Ospreys move up to third in Conference A.