Man in the middle: Paul Tierney
Paul Tierney will take charge of Swansea City's FA Cup tie at Sheffield Wednesday on Saturday (12.30pm).
Tierney, from Wigan, will be the man in the middle for a Swans game for the second time this season, having officiated the 2-0 home win over Huddersfield in October.
He will be assisted this weekend by Lee Betts and Stuart Burt, with Oliver Langford the fourth official.
Tierney has been the referee in 21 games this season, issuing 54 bookings and is yet to show a red card.