Ospreys and Wales captain Ryan Jones says his side's Magners League Grand final win over Leinster has boosted the national side for their summer Tests.
The Welsh region won 17-12 at the Irish province's Dublin home by scoring two-tries-to-none.
Wales face South Africa on Saturday, then travel to New Zealand for two Tests.
Jones said: "The boys will go into next week full of beans, with loads of confidence and looking forward to it."
In the process of beating Leinster with the help of tries from Irishman Tommy Bowe and Lee Byrne, the Ospreys became Celtic rugby's most successful team with three triumphs to the Irish side's two since 2002.
Jones added: "I'm over the moon. We worked extremely hard and possibly against a lot of people's opinions, we've come here and done it and I thought we played well.
"So the boys did it superbly and I think we got what we deserved today.
"What a fantastic spectacle for this league. We've come here, into a packed house, fans were noisy they just appreciate good rugby and we've managed to lift the trophy on someone else's home patch, which is never easy.
"It's good to have some silverware."
Opening try-scorer Tommy Bowe, who arrived at the Ospreys two years ago from Ulster, was also delighted to have ended his win drought against Leinster, who had beaten the Welsh side in their previous six encounters.
Bowe said: "It's so special. It's a great two years I've had with the Ospreys. A lot of people talk about the Ospreys and it's been a great year for us - knock-out stage of the Heineken Cup and then this.
"It's very special. It's a great end to the Magners League and a great end to our season.
Shane 'overwhelmed' by Grand win
"I think it's the first time I've ever beaten Leinster.
I've drawn against them and it's a great way to win, to come over here, a very difficult place to win - they have a great record over here and there'll be a lot of celebrating."
Bowe's fellow try-scorer Lee Byrne was relieved to hear the final whistle and pleased at his own performance at the end of a difficult seasons.
Byrne said: "It was just relieving in the end. I thought they were coming back. But it was nice to get a result and for our supporters who did make it, we gave them something to cheer.
"Personally, myself, it's not been the best of seasons so it's nice to get a good performance under my belt."
Ospreys head coach Sean Holley said: "As somebody who has been to every single Ospreys game, it's pretty much up there I can tell you - it's a special night.
"I wouldn't say it was our best performance, but certainly one of our most courageous and determined.
Leinster are pretty outstanding in defence, and it's the end of a long, hard season. I'm not that surprised [we cut through them], because we have some great talent
Ospreys head coach Sean Holley
"We went out to try and win it, we went out to score tries and we did that. There aren't too many teams who can come here and score tries against Leinster.
"To score two in the first half, it just gave us a little bit more belief that we could try and push on and win it.
"We tried to lose it in the second half, by giving away some penalties, but our defensive effort in the end was outstanding.
"We had a game-plan and a strategy, which sometimes comes off and sometimes it doesn't. We just felt that we could get through on a short pass in the midfield, which was the result of our first try.
"It was a great finish by Lee [Byrne] for our second try. Down the short side, which was something we had spotted.
"Leinster are pretty outstanding in defence, and it's the end of a long, hard season. I'm not that surprised [we cut through them], because we have some great talent."
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.