You could store the matches in a HashMap as well, using some MatchId type as the key, i.e., HashMap<MatchId, Match>. Then you can use that as the reference in players: HashMap<String, MatchID>. Only downside is that you have to generate unique MatchIds, e.g., by using some counter.

Hmm, I didn’t think that out. Still better than hair though

Medusa. She makes me rock hard. Also, no hair in the shower drain is a nice bonus.

Curse your sudden but inevitable betrayal!

I miss Öffi.

I have never used Öffi myself (always had an iPhone), but have you tried ÖPNV Navigator? It seems to provide similar functionality.