Finn made a spectacular return during last summer's Edgbaston Ashes Test, taking eight wickets to help England to a victory that proved decisive to their eventual series success.
However, whether CSKA Moscow join Manchester United in the knockout stages depends on Uefa's ruling over the news that two of their players, Sergei Ignashevich and Alexei Berezutsky, had failed a doping test and had taken banned substances before their 3-3 dragainstnst United at Old Trafford and the 2-1 win over Wolfsburg in Moscow that proved decisive to their qualification.
But the Australian, cleared of wrongdoing in April after a positive test for clenbuterol, made his move and it proved decisive to prevent Voeckler from extending his unbeaten run at Bagneres-de-Luchon.
One lawyer said he failed to provide evidence one way or the other about Mr. Mubarak's role in the crackdown on protesters, saying that he was not present in meetings that could have proven decisive to the prosecutors' case.
The question of the opposition's capabilities is likely to prove decisive to the fate of the rebellion, which appears outmatched by government forces and troubled by tribal divisions that the government, reverting to form, has sought to exploit.
And with Britons living in places like Tuscany or the Dordogne among those most likely to be adversely affected by a "leave" vote, actively helping them to have their say could prove decisive to the end result.
Even if Chinese brand associations can seem remote and perhaps amusing to those outside the country, Zhang Yu, managing director of Automotive Foresight, a Shanghai industry consultancy, says they will prove decisive to sales in coming decades.
Naval power did not prove decisive to the outcome, in part because both sides were constrained, until late in the war, by a relatively traditional view of how war at sea should be fought.
Although Saturday's match was the first of the tournament for both teams, the result could prove decisive to both team's chances of progressing after Uzbekistan, the Group B favourites, earlier beat North Korea 1-0 in Sydney.
In a seminar held at the Guardian's offices in London, in partnership with Aviva, participants from academia, NGOs, civil society, corporates and politics explored power dynamics and the issues that prove decisive to a partnership's success or failure.
With matches against Burnley and Swansea up next, you would fancy them to put up a real fight for that feat, with back-to-back matches against Manchester United and Arsenal after that likely to prove decisive to their chances of returning to the Champions League.
