Wales prop Keiron Assiratti returned from a calf harm amongst 5 Cardiff modifications to the aspect that narrowly beat the Dragons on Boxing Day.
Fellow prop Danny Southworth, lock George Nott, quantity eight Alun Lawrence and scrum-half Johan Mulder additionally began.
Stand-in Ospreys skipper Dewi Lake dropped to the alternative bench, with Parry and full-back Jack Walsh named as co-captains.
Hardy, who was solely the specialist quantity 9 within the Ospreys squad with accidents to Reuben Morgan-Williams and Luke Davies, went near the opening rating, however misplaced the ball over the road earlier than flanker Harri Deaves was additionally held up.
Wales wing Giles ultimately broke the impasse together with his nice particular person attempt following a intelligent Hardy go.
Of their first assault of be aware Cardiff responded with some stylish attacking play with centre Ben Thomas gliding via the Ospreys defence twice and offering the try-scoring go to Adams.
Ospreys returned to the ability recreation with Hardy benefitting by diving over the ruck to attain.
Cardiff captain Liam Belcher was proven a yellow card for an unlawful clearout on Rhys Davies in an motion that visiting flanker Dan Thomas was additionally concerned with, however he averted being sin-binned.
Ospreys couldn’t benefit from the additional man and led 12-7 at half-time.
Cardiff have been restored to fifteen males, however Ospreys scored early within the second half after instrumental work from wing Hopkins and lock Ryan Smith permitting Parry to attain.
Ospreys have been with out Wales prop Gareth Thomas, who’s sidelined with a calf harm till the tip of January, however Garyn Phillips demonstrated his price when he popped up with an important defensive turnover.
Hardy crossed for the bonus-point rating as he left Cardiff wing Mason Grady trailing in his wake earlier than Hopkins accomplished the Ospreys scoring.
Cardiff responded with a nice second rating for Adams earlier than Faletau charged over, with their supporters questioning the place this attacking intent had been for the opening 70 minutes.
Ospreys alternative Morgan Morse was proven a yellow card for knowledgeable foul earlier than Sebastian crossed for the shedding bonus-point rating.
