The phrase "predominant player" is correct and usable in written English
You can use it when referring to someone or something that is the most prominent or influential among a group. For example, "The US has been the predominant player in the global economy for many years."
Tehran in particular built up its proxy, Hezbollah, which would go on to fight Israel to a stalemate in 2006, conquer Beirut by force in 2008 and establish itself as the predominant player in Lebanese politics.
Now the new boss, William Donaldson, is moving to make the SEC the predominant player again.
Layar, which has raised a significant amount in early 2010, is expanding rapidly and is on its way to becoming the predominant player in AR in Europe.
Rather, it should work toward enabling the RFE to integrate with the Asia-Pacific economies, so that China does not become the predominant player.
The scarcity of nutrients in their natural habitats and the very low light available at depth were probably the main challenges faced by these organisms to colonize and become a predominant player in intertropical oceans.
Although AdipoR1 is considered important for mediating adiponectin effects in skeletal muscle, AdipoR2 appears to be the predominant player in liver [ 4, 5].
The predominant players are Sinn Fein (SF the only party with seats in the Irish parliament that is against the treaty and Coir, a group stridently promoting traditional Catholic social and family values.
Indeed, a network-based study identified hormones and immune factors as predominant players in cold and hot TCM syndromes [ 38].
Barshai will be remembered chiefly as a conductor, but he first made his mark as a violist, and for two decades was as predominant a player as Yuri Bashmet in more recent times.
When the Nets hired Rod Thorn as team president last June, Thorn took a predominant role in player and personnel matters, duties that Nash had primarily overseen with Michael Rowe as team president.
Indeed, while there is good scientific evidence that performance on a visual task can be interfered with when a rare unexpected distracting sound occurs, such as a phone ringing during an exam [8], a predominant complaint is that tennis players grunt too frequently, so the grunts can hardly be unexpected.
