Coach Gabriel Calderon
Best result Runners up in 1970, 1982, 1992, 2003
Key Player Jaycee John
The Nigeria-born striker, above, was the toast of the nation after his two goals took Bahrain into the semi-finals of the West Asian Football Championship last month. Home fans will be hoping for a repeat and more.
Prediction With their home support, Bahrain could end a 42-year wait for a Gulf title.
Coach Paul Le Guen
Best result Winners 2009
Key Player Amad Al Hosni
A much-decorated star in Qatari and Saudi Arabia leagues, Al Hosni helped his Jeddah-based Al Ahli club reach the final of the AFC Champions League in November. His form will be crucial to Oman's success.
Prediction Semi-finalist at last month's West Asian Championships, Oman could match that in Bahrain.
Coach Paulo Autuori
Best result Winners 1992, 2004
Key Player Khalfan Ibrahim
The 2006 Asian Player of the Year, Khalfan is one of the most influential players in the Qatari team and, after his experience of playing alongside Raul at Al Sadd, he will definitely be one of the players to watch.
Prediction Hampered by injuries, Qatar could struggle to make it past the group stages.