Cardiff Blues had Seb Davies, Dmitri Arhip and Scott Andrew yellow cards in the second half as they played with 14 men for most of the game

The hosts could only score one penalty from Jason Tovey in response to their temporary home stadium

Osprey’s flanker Dan Lydiate was yellow carded in the first half for a high challenge against Cardiff Blues fly half Jason Tovey

Referee Ben Whitehouse considered a red card for Lydiate, but 10 minutes in sin were forgiven

To see Wales coach Wayne Pivac have been satisfied with a powerful performance from wing George North ahead of the Six Nations next month

Cardiff Blues returned to Cardiff City Stadium for the first of two home games for the first time in nine years

Blues had played on location for three years between 2009 and 2012 before returning to Arms Park

They vacated their home in 2020 because it became part of the Principality Stadium field hospital complex

While the stadium was out of order, Cardiff Blues also used Rodney Parade in Newport as a temporary home

John Mulvihill made eight changes including Welsh strikers Rhys Carre and Shane Lewis-Hughes Welsh flanker James Botham retired late when Alun Lawrence started

Ospreys also made a half-move, with Rhys Webb starting in place of Reuben Morgan-Williams, while center Kieran Williams replaced Tiaan Thomas-Wheeler in midfield

Toby Booth made four changes to the pack, including a new first row from Rhodri Jones, Ifan Phillips and Ma’afu Fia, as well as the addition of Sam Cross, number eight

There was an enterprising Ospreys opening phase that featured Justin Tipuric and North while center-backs Webb and Stephen Myler got the crowd moving with clever probing kicks

There was the now traditional kick tennis between the two teams before Ospreys center Scott Williams was sent off in the first quarter with a shoulder injury that could mean a long break

A clean counterattack from Hallam Amos and a back-up game from Tomos Williams set the stage for Tovey to open the scoring after Webb was punished for an intentional kick-off

Ospreys responded by attempting the game’s opening with a powerful lineout that allowed hooker Ifan Phillips to cross, and Myler converted

After a great break from North from his own 22, Lydiate thrust his arm into Tovey when he was in possession

After numerous reruns on television, Referee Whitehouse found it a yellow card offense for Lydiate, as officials believed there was no clear evidence that he had made contact with Tovey’s neck or head

The home team had to switch at halftime when returning Willis Halaholo came on to replace wing Aled Summerhill after a head blow

Myler missed a chance to extend the lead early in the second half after Josh Turnbull and Arhip collided

Cardiff Blues Lock Davies was yellow carded for driving into an Ospreys lineout when Lydiate returned to the field

North prevailed again through the Cardiff Blues defense, and although one attempt was denied Myler prevailed against a penalty

The hosts had just been reset to 15 men before Arhip received the yellow card for collapsing an Ospreys driver while attempting a penalty

Cardiff Blues wing Josh Adams denied Ospreys captain Justin Tipuric a try with a touchline tackle before prop Andrews received a yellow card after being dominated by the crowd

There was a bad incident at the last minute when Cardiff Blues Center’s Garyn Smith was sent off with a leg injury and was replaced by Lock Ben Murphy

Osprey’s head coach Toby Booth said: “It was a good reward for the effort we put into the game and I’m delighted about it

“You base a lot of your appearances on set pieces and we were dominant in that area tonight, which is fantastic

“It makes the game a lot easier to play on your forefoot than your back foot, and you make it harder for yourself to beat it

“The exciting thing for me is that this group was disappointed after not being further ahead on the scoreboard”

Cardiff Blues head coach John Mulvihill said: “We have to play well enough in these games to deserve the win and we didn’t play well enough tonight and we got that”

“We can’t give 19 penalties and three yellow cards and come out on the right. I was really disappointed with our discipline

“We have to clean this up The intensity wasn’t there for us for many periods tonight and the ospreys had that

“The venue was fantastic It didn’t get the spectacle of rugby, but it’s a great place to play”

Cardiff Blues: Amos; Adams, Lee-Lo, Smith, Summerhill; Tovey, T. Williams; Carré, Dacey, Arhip, S. Davies, Thornton, Lewis-Hughes, Lawrence, Turnbull

Ospreys: Evans; North, S. Williams, K Williams, Morgan; Myler, Webb; Jones, Phillips, Fia, Bart, Davies, Lydiate, Tipuric (Capt), Cross

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World News – GB – Cardiff Blues 3-17 Ospreys