Bradford Bulls are one of the biggest names in British rugby league outside of the Super League. In their golden era from the mid-nineties through the 2000s, they won four Super League titles and two of their five Challenge Cup trophies.
Times have been harder in the years since then for the Bulls - after going into administration in 2012, relegation followed in 2014 and since then they have plied their trade outside of rugby league's top tier.
After a brief spell in League 1, the Bulls returned to the Championship last year and will be hoping they can begin looking upwards once again after agreeing a ground-sharing arrangement with Dewsbury Rams - this will be their first Challenge Cup home match away from the Odsal Stadium.
Their opponents, Underbank Rangers, may have a smaller trophy cabinet - but the Holmfirth-based club have been around since 1884 and launched the career of Harold Wagstaff, who would go on to become the first person inaugurated into rugby league's Hall of Fame.
They currently compete in the National Conference Premier, the fourth tier of English rugby league, and have now made the fourth round of the Challenge Cup for the first time in their long history.
How can I watch?
All times are GMT and subject to change
You can catch live coverage of Bradford Bulls v Underbank Rangers on the BBC Red Button, BBC iPlayer and on the BBC Sport website and mobile app - and if you miss any of the action, the entire broadcast will be available for catch-up on the iPlayer.
Sunday 23 February
12:50-15:00 - BBC iPlayer & BBC Sport website
What is the Challenge Cup?
Video content
Video caption: Challenge Cup: Warrington Wolves beat St Helens 18-6Challenge Cup: Warrington Wolves beat St Helens 18-6
The Challenge Cup is a knockout rugby league cup competition held annually since 1896, with the exception of 1915–1919 and 1939–1940. It involves amateur, semi-professional and professional clubs.
The teams from the top tier of rugby league, known as the Super League, enter the Cup in the fifth and sixth rounds, with the final of the prestigious competition held at Wembley Stadium.
The current holders of the Challenge Cup are Warrington Wolves who stunned St Helens to win the Challenge Cup for the ninth time.
Wigan Warriors are the most successful club in the history of the competition, winning the cup a record 19 times.
How to get into rugby league
Get Inspired
#GetInspired
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Video caption: Rugby League: "the speed of an Olympic sprinter and the impact of a car crash"Rugby League: "the speed of an Olympic sprinter and the impact of a car crash"
Fancy giving rugby league a go yourself?
There are so many different versions of the sport, so there is something to suit everyone, regardless of your age, gender or ability.
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Live Reporting
All times stated are UK
SW PixCopyright: SW Pix Bradford Bulls' Matty Dawson-JonesImage caption: Bradford Bulls' Matty Dawson-Jones Video caption: Challenge Cup: Warrington Wolves beat St Helens 18-6Challenge Cup: Warrington Wolves beat St Helens 18-6 
Video caption: Rugby League: "the speed of an Olympic sprinter and the impact of a car crash"Rugby League: "the speed of an Olympic sprinter and the impact of a car crash"
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Bradford Bulls are one of the biggest names in British rugby league outside of the Super League. In their golden era from the mid-nineties through the 2000s, they won four Super League titles and two of their five Challenge Cup trophies.
Times have been harder in the years since then for the Bulls - after going into administration in 2012, relegation followed in 2014 and since then they have plied their trade outside of rugby league's top tier.
After a brief spell in League 1, the Bulls returned to the Championship last year and will be hoping they can begin looking upwards once again after agreeing a ground-sharing arrangement with Dewsbury Rams - this will be their first Challenge Cup home match away from the Odsal Stadium.
Their opponents, Underbank Rangers, may have a smaller trophy cabinet - but the Holmfirth-based club have been around since 1884 and launched the career of Harold Wagstaff, who would go on to become the first person inaugurated into rugby league's Hall of Fame.
They currently compete in the National Conference Premier, the fourth tier of English rugby league, and have now made the fourth round of the Challenge Cup for the first time in their long history.
How can I watch?
All times are GMT and subject to change
You can catch live coverage of Bradford Bulls v Underbank Rangers on the BBC Red Button, BBC iPlayer and on the BBC Sport website and mobile app - and if you miss any of the action, the entire broadcast will be available for catch-up on the iPlayer.
Sunday 23 February
12:50-15:00 - BBC iPlayer & BBC Sport website
What is the Challenge Cup?
Video content
The Challenge Cup is a knockout rugby league cup competition held annually since 1896, with the exception of 1915–1919 and 1939–1940. It involves amateur, semi-professional and professional clubs.
The teams from the top tier of rugby league, known as the Super League, enter the Cup in the fifth and sixth rounds, with the final of the prestigious competition held at Wembley Stadium.
The current holders of the Challenge Cup are Warrington Wolves who stunned St Helens to win the Challenge Cup for the ninth time.
Wigan Warriors are the most successful club in the history of the competition, winning the cup a record 19 times.
How to get into rugby league
Get Inspired
#GetInspired
Video content
Fancy giving rugby league a go yourself?
There are so many different versions of the sport, so there is something to suit everyone, regardless of your age, gender or ability.
Visit ourActivity Guideto find out how you can get started and our Activity Finder to get into rugby league near you.