The Scottish Premier League side dropped into the competition after being beaten by Arsenal in the Champions League play-off round.
While Thursday's match is only the first leg in the play-off round, the result could go a long way to deciding whether Craig Brown's men take their place in the draw for the group stages a week on Friday.
Tipped for relegation at the start of the year, the Reds finished a hugely creditable fifth, beating Warrington three times during the campaign before losing 52-6 at Bradford in the first round of play-off games.
Mickelson believes Woods' play-off victory over Rocco Mediate round Torrey Pines for the most recent of his 14 majors is a warning that has been heeded by the rest of the field.
Two rounds of play-off games to determine rankings take place after Saturday's final pool round and Davies will be available for Wales' last match.
Veteran Tom Watson , who fired a scintillating five-under-par 65 on Thursday, had been two strokes off the second-round lead with six holes to play.
Last year at Crans-sur-Sierre he led by four shots going into the final round but missed a short putt for victory and lost in a play-off to Frenchman Jean-Francois Lucquin.
Having been eliminated in the second round of the competition, Simba will now contest a one-off play-off with Morocco's Wydad Casablanca to determine who reaches the group stage.
It all started nine months ago on a scorching summer's day in Lithuania, where the Cottagers beat FK Vetra in the third qualifying round, before moving on to west-central Russia for the qualifying play-off second leg against Amkar Perm.
Leinster travel to another of last season's play-off sides, Glasgow Warriors, on the opening weekend, then host Cardiff Blues in the second round of fixtures on 11 September.
Spurs were given enough evidence that they will have to up their game to overcome a Young Boys side who won 1-0 away at Fenerbahce in the last round to triumph 3-2 on aggregate and secure their progress to the play-off.
All games in the final round will kick-off simultaneously to ensure that no teams have advantage when chasing play-off places or European qualification.
Bickerton narrowly avoided a play-off with Ireland's Padraig Harrington after he double-bogeyed the 15th, but held on with a final round of 69.
BBC: SPORT | Golf | European Tour | Bickerton earns French Open win
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