Betis defeated Ludogorets 2:0 in Razgrad in the second round of the Europa League group stage.
In the first half, Giovani Lo Celso opened the scoring, and in the second, Son scored an own goal. Earlier in the match, the Spanish defender nearly scored at the right end, but his free-kick went off target.
The match will also be remembered for what appears to be a serious injury to key Ludogorets defender Edvin Kurtulus.
Ludogorets had several good chances, but couldn't find the back of the net.