Watch as Natasha Jonas’ trainer Joe Gallagher complains about “uncalibrated” scales before the weigh-in with Lauren Price.

The two go head-to-head on Friday in their welterweight unification fight.

READ MORE: ‘Uncalibrated’ scales drama as Jonas & Price weigh in

Follow live text commentary on Friday from 20:00 GMT and radio coverage from 21:00 on BBC Radio 5 Live, BBC Sounds and the BBC Sport website & app.