crocozino.io
You do not even have a sportsbook section.
@OP: The words "betting" and "safe" do not fit together very well. Sure, the payment morale varies and is highly dependent on the capital base, number of customers, a genuine business concept and so on. You mentioned bitsport.bet. Forget about them. Bitsport.bet is the only one on your list where I can guarantee you they are pure scam with exit plans already in mind. Few weeks on the market and already many troubles arise which you can look up in their thread. They do not even have a license anywhere.
Roadbet is a 188bet/Singbet clone which focuses on the Eastern European market. There have been some issues in the past. I didn't ever play there so I have no own experience but I wouldn't have a good feeling to be honest.
Betonline should be legit when it comes to withdrawals but keep in mind there also have been issues in the past.
Safe places do not exist in this business.
But me cousin invest and earn about 0.3 (I don't know exact amount) and when he trying cashout his account was closed. I said for him to register in bitcointalk and left bad review about this sportsbook. I feel very guilty for his lost money becouse I said register in betballer 
but i hope you are really careful when you decide to playing gambling because i think 0.1-0.5 btc is big money although maybe its not big for you. 
