THEME:   phrases containing names of sports separated by the middle letters of the phrases; hence, at the extremes of the phrases   
GOOD ONES:     X games activities {& theme}   EXTREME-SPORTS   
Acapulco gold   ORO [type of marijuana]   
Pro pitcher?   SALESMAN         
BTW:   As much as I don't like POR-EJEMPLO, it is a perfect fit for this theme.      
The SLA was a lunatic radical group of disturbed youth which sadly lives on in Xwords.  [Simbionese Liberation Army]      
Blended beverage   SMOOTHIE [I'd have loved to see it clued, "You're and Old ____": pop song.]      
RATING: 
 
   Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun