Are you headed to Camden Yards on Opening Day and already dreading parking? A typical day at the ballpark can cost up to $42 or more, but the folks at SpotHero are here to help save you money by reserving your spot.

Their service is convenient and it just launched in Charm City in time for Friday’s home opener. You can use SpotHero’s on-demand parking app, available through iTunes or Google Play, to access affordable stadium parking throughout the regular season at Camden Yards.

And our friends at SpotHero have a special offer for one lucky BSR reader — a free $30 credit to one lucky reader.

All you have to do is retweet this tweet and your automatically entered to win. We’ll select one random retweeter on Thursday prior to the Orioles returning to Baltimore Friday afternoon.

Good luck!