Koscheck took on Mauricio Alonso, who tagged him with a big right and then prompted the ref’s stoppage with strikes from above.
The loss was Koscheck’s sixth in a row. The 39 year-old was fighting for the first time since 2015.
Bellator 172 took place in San Jose, California.
— FOX Sports Argentina (@FOXSportsArg) February 19, 2017