The Cincinnati Reds and Detroit Tigers begin a weekend series tonight at Great American Ballpark, but the two franchises have challenged each other off the field as well.
A hashtag battle begins at Noon on Friday and continues throughout the weekend series, putting the two teams' fans against each other.
To help the Reds win, use your Twitter account and add the hashtag VoteReds to your Tweet. At the end of the weekend, the Reds and Tigers will add up the number of hashtags used and determine the winner.
What does the winner get? That's the interesting part.....
The losing team will have to support the winning team in All-Star voting on Monday. This includes changing their official team avatar on Twitter, re-Tweeting voting messages, promoting the other team's hashtag etc.
Think about it, the Tigers official Twitter account will have to spend the day supporting the Reds! But they can't do it without your help, so start Tweeting now!
Also, don't forget to go to MLB.com and vote for your favorite Reds players to be selected to go to the All-Star Game (July 10th, on FOX).