Baysox fans and baseball card collectors won’t want to miss Friday’s game against the Harrisburg Senators, when the team will be giving away 20th season card sets to 500 lucky fans ages 6 and older.

This is the second chance fans have had to receive a set of the cards, which feature 10 of the greatest players in Baysox history, according to a press release.

The gates at Prince George’s Stadium open at 6 p.m. Friday and the first 500 fans will receive a free set. The game begins at 7:05 p.m.

Friday isn’t the only chance for fans to score the 20th season card set. The final card giveaway will be Aug. 30, as the Baysox take on the Erie SeaWolves at 7:05 p.m. at Prince George’s Stadium. Once again, gates will open at 6 p.m. and the first 500 fans ages 6 and older will receive a free set of cards.

Tickets to both games can be purchased online here.