We take a look at the permutations for all 12 clubs on the final day of matches in the Pro12 on Saturday.
1 Ospreys – Pts 70 W15 PD +184
v Connacht (A)
A bonus-point win in Galway will assure the Welshmen of a top-two finish and home semi-final on games won, the next deciding criteria in the event of a tie on total points.
2 Glasgow - Pts 70 W15 PD +158
v Ulster (H)
Looking for a bonus-point victory over Ulster to claim second place at least as they lead Munster on number of games won.
3 Munster – Pts 70 W14 PD +191
v Dragons (H)
Simply need to do better in Cork than either Glasgow or Ospreys manage in their games as they have won one game less.
4 Ulster - Pts 69 W14 PD +174
v Glasgow (A)
Need a bonus-point win in Glasgow and rely on a Connacht or Dragons victory to seal a home semi.
5 Leinster – Pts 57 W10 PD +95
v Edinburgh (H)
European qualification is secure but Champions Cup seeding based on league positions next season means they will be desperate to hang onto fifth place.
6 Scarlets – Pts 53 W10 PD +60
v Treviso (A)
Hold the last automatic qualifying position and a win in Italy would see them home. Can still overtake Leinster and finish fifth.
7 Connacht – Pts 49 W10 PD +32
v Ospreys (H)
Need a bonus point win and Scarlets loss to claim sixth, or a four-point win and Scarlets loss without a losing BP. Must finish above Edinburgh to claim seventh and a spot in a Champions Cup play-off opener at Gloucester.
8 Edinburgh – Pts 48 W10 PD -7
v Leinster (H)
Slim hopes of sixth now but will target seventh and a Euro play-off with a win in Dublin and Connacht losing in Galway.
9 Dragons – Pts 41 W8 PD –68
v Munster (A)
Cannot change league position but can ruin Munster's hopes of a home semi-final.
10 Cardiff Blues – Pts 30 W6 PD -139
v Zebre (H)
Only pride at stake for the Blues, already consigned to their worst league finish and points total.
11 Treviso – Pts 18 W3 PD -331
v Scarlets (H)
Must win or at least claim a losing bonus point to hold off Zebre for Euro qualification next season.
12 Zebre – Pts 15 W3 PD -349
v Cardiff Blues (A)
Can overtake Treviso and claim the Italian Champions Cup berth if they win and their compatriots lose without a bonus point.