London Broncos piled more pressure on Widnes Vikings as they edged to a thrilling 21-20 victory at the Halton Stadium in the opening match of the Super 8s Qualifiers.
The Vikings could only register three wins from a possible 23 matches during the regular Betfred Super League season and the defeat extended their losing run to 17 matches, thanks to Jarrod Sammut's last-gasp drop goal.
London finished in second place in the Championship as they looked to return to the top-flight for the first time since 2014, and the two sides fought out a cagey first half with Oliver Ashall-Bott's converted try proving to be the only score as the hosts led 6-0 at the break.
However, London responded just two minutes after the restart through Mark Ioane to trail by two points but Widnes extended their lead to 14-4 after two goals from Krisnan Inu and a Chris Dean touchdown.
Daniel Harrison and Kieran Dixon crossed to draw the Broncos level at 14-14 before the latter grabbed his second score to put the visitors in front for the first time, only for Inu to dot down with five minutes remaining on the clock but Sammut landed the crucial one-pointer to seal a crucial victory for London.