Wayne Pivac's Scarlets will have to do without captain Ken Owens for their crunch Guinness PRO12 semi-final with Leinster on Friday evening.
The Ireland and Lions flanker, who was initially named on the bench for Friday's clash with Scarlets at the RDS, has since been omitted from the 23 completely by head coach Leo Cullen - though the injury is to his calf this time, as opposed to the hamstring issue that had been troubling him in recent weeks.
Lions hooker Owens misses out with an ankle injury while lock Ball has a shoulder problem.
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Leinster topped the PRO12 for most of the season and boss Leo Cullen has named a strong team for the semi-final clash, even with Ireland's global lock Devin Toner dropped to the bench.
In better news for Scarlets, back row pair James Davies and John Barclay have recovered from respective knocks to return to the starting XV, with Scotland global Barclay named as captain.
"They're a very strong side defensively, they make it very hard for attacks".
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He said: "Of course not, I think to suggest that is to give credence to some of these weird rumours that have swirled around the candidacy".
"It will be a big, big challenge for us but it's also a great opportunity". "We haven't been in this position since this group of coaches, and players, have been together". We're not far off having our top side available, we're going in there with some confidence, not over confident, but confidence we deserve to be in the semi-finals.
Leinster: 15 Joey Carbery, 14 Adam Byrne, 13 Garry Ringrose, 12 Robbie Henshaw, 11 Isa Nacewa (c), 10 Johnny Sexton, 9 Luke McGrath; 1 Jack McGrath, 2 James Tracy, 3 Tadhg Furlong, 4 Ross Molony, 5 Hayden Triggs, 6 Rhys Ruddock, 7 Josh van der Flier, 8 Jack Conan.
Scarlets: Johnny Mcnicholl; Liam Williams, Jonathan Davies, Scott Williams, Steff Evans; Rhys Patchell, Gareth Daviess; Rob Evans, Ryan Elias, Samson Lee, Lewis Rawlins, Tadhg Beirne, Aaron Shingler, James Davies, John Barclay (capt).
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Merkel warmly welcomed the fourth president to occupy the Elysee Palace since she came to power 12 years ago. But Macron's office said the government line-up would not be unveiled until 3:00pm (1300 GMT) on Wednesday.