In a statement, the party said that Mohammed Hubail was convicted and sentenced on Thursday during closed-door proceedings in a Bahraini special security court. The court was set up under martial law imposed in March to quell Shiite-led demonstrations against Bahrain’s Sunni monarchy.
Eight of Mr. Hubail's co-defendants were jailed for life on charges of attempting to topple the Bahraini monarchy and havinglinks to a foreign terrorist organisation. Ten others were sentenced to 15 years each.
Another defendant got two years after being acquitted of all charges against him, except taking part in illegal gatherings and spreading rumours and lies.
At least two of his teammates, including Mr. Hubail's brother and Bahrain soccer star Alaa, have been in custody since the crackdown began.
Alaa, a 28-year old striker, played a key role in helping Bahrain reach the 2004 Asian Cup semi-finals, the national team's greatest achievement to date.
He was also instrument in Bahrain playing two World Cup qualifying play-offs even though it failed to reach the 2006 World Cup finals in Germany or the 2010 ones in South Africa .
Bahrain has denied that the arrests violate FIFA rules.
Bahrain officials blame the protests on Iranian interference in the Gulf island's affairs. Bahrain invited troops from the Saudi-led Gulf Cooperation Council (GCC), which groups the region's conservative oil-rich monarchies, to help it quell the unrest.
The brutally squashed protests were part of a wave of demonstrations sweeping the Middle East and North Africa in demand of greater political freedom and economic opportunity.