Tigers won their five games in the latest Coloplast Super Series at De Montfort University’s Queen Elizabeth II Diamond Jubilee Leisure Centre in Leicester.
It followed their perfect records on the first two weekends of action in the competition earlier in the season.
Jamie Stead, of the Tigers Wheelchair Team, said: “Three super series and three best in classes, thanks everybody, but winning the league with the tigers was the best moment though.
“Well done to everybody involved with the club. It’s such a great achievement for our first season as a team.”
Tigers kicked off their latest weekend of fixtures with 72-27 win against the Sharks, who are based at Southampton Solent University.
The Tigers followed it up with a 57-31 win against the South Wales Pirates, of Cardiff, before ending Saturday’s action with a 66-16 victory over Plymouth-based West Country Hawks.
Sunday kicked off for the Tigers team with a 61-14 victory over the Hammerheads, the Sharks’ development squad.
And they were awarded their final game against the Caledonian Crushers, who did not attend the event.
The Tigers team train at De Montfort University's Queen Elizabeth Jubilee Sports Centre in Leicester on Fridays from 12.30pm-3.30pm.
Anyone interested in training, becoming a player or becoming part of the volunteer staff are more than welcome. Contact the Tigers team
A second session is held on Wednesday evenings (7pm-10pm) at the Lee Westwood Leisure Centre, Nottingham Trent Clifton Campus.