Sporting and Betis fans clashed near the Algarve stadium ahead of their friendly on Thursday.
The clash occured around an hour before kick-off and lasted for two minutes or so.
20 Betis fans were detained and sent back to Spain.
Sporting and Betis fans clashed near the Algarve stadium ahead of their friendly on Thursday.
The clash occured around an hour before kick-off and lasted for two minutes or so.
20 Betis fans were detained and sent back to Spain.
