No other team has won as many games (9) or scored as many points (36) as Northamptonshire in the T20 Blast so far this season.

The Steelbacks only lost once, against Somerset comprehensively on Sunday, and won again in style to qualify for the quarter-finals.

Ben Kellaway (3-22) was the bowlers’ choice for Glamorgan but Lynn’s century and a quickfire 25 for both Ricardo Vasconcelos and Saif Zaib propelled the visitors to 217-7 in their 20 overs in Cardiff.

Glamorgan responded quickly, with captain Kiran Carlson making 42, but after being dismissed in the seventh over, Northants began to tighten the screw, reducing the Welsh team from 65-2 to 164 all out.

Calvin Harrison took 3-20, while Zaib (2-27) and James Sales (2-21) helped Northants advance the hosts’ batting line-up.

Will Smeed scored 89 for Somersault on a total of 214-6, with Martin Andersson winning 3-33, as they refused to give up hope of retaining their title. It set a daunting task for the fighters of the Northern Group. Derbyshire who fell short at 187-7.

Falcons captain Aneurin Donald responded with 65 off 27 balls to help them reach 74-2 in six overs, but once Harry Came was dismissed for 28 by Daniel Sams (3-29) in the 11th over, Derbyshire stuttered.

Wayne Madsen scored 43 but Somerset won comfortably in the end, although they will probably need two wins in their last two games to have any chance of progressing.