Extra Bases is a non-club event with multipliers. You use your own team or everyone participating uses the same team. Rack up hits and runs before 3 outs. Each hit increases your point multiplier (the better the hit, the bigger the increase). Each out reduces the multiplier. 
 
These events have a limited number of entries, competing in a global bracket. Each participant gets a free number of entries per event.
Rankings and rewards are based on total scoring during the event's time frame.