Celtic battle.

Leinster and Scarlets are set to clash this weekend in the European Champions Cup with a spot in this year’s final in Bilbao up for grabs.

The two sides know each other very well on a domestic level, with Scarlets coming out on top in Dublin in last year’s PRO12 semi-final. But they have never met before in the last four of the Champions Cup.

Ahead of the game, we’ve been looking at some interesting stats that could play a significant role this weekend at the Aviva.

• The clubs have met seven times previously in the European Cup with Leinster winning five of those matches (L2), including the last four in a row.

• This will be Leinster’s 10th semi-final appearance, only Munster (13, including 2017/8) have featured in more (Toulouse also on 10).

• Just one of Leinster’s previous nine semi-finals have been against Welsh opposition, that was back in the first edition of the Champions Cup in 1995/96 when they were beaten by Cardiff.

• Scarlets have reached this stage of the Champions Cup for the first time since 2006/07 and for the fourth time overall; they have yet to progress to the final, however.

• Leinster are the only side with a 100% winning record in this season’s Champions Cup and could become just the second club after Saracens in 2015/16 to win every match in a campaign. Leinster did go unbeaten during their 2011/12 triumph (W8, D1).

• No side has averaged more tries per game than Leinster this season (3.6, same as Saracens), whilst the province has also conceded the fewest penalties per match (7.6).

• The Scarlets have won 94% of their own lineouts in this campaign, the best rate of any side.

• Luke McGrath (1 try, 6 assists) and Gareth Davies (4 tries, 3 assists) have both been directly involved in seven tries this season, no player has had a hand in more (also Dan Evans).

• Ken Owens (105) is one of just two players to make 100+ tackles this season (Tom Dunn, 119).

• Tadhg Beirne has won five more turnovers (16) than any other player this season, nine of those have been jackals.