The striker helped the Bees seal their first win at home against Brighton & Hove Albion since 2014 with both goals in a 2-0 win.
Tributes to 24-year-old Enock Mwpeu ran throughout the Brentford Community Stadium at the start of the competition as both groups of fans paid their respects to the former Brighton midfielder, whose career was cut short due to a medical condition this week.
The first half
Brighton soon turned their attention to earning a possible first victory for new boss Roberto De Zerbi and Moises Caicedo launched from 25 yards to force David Raya to save to the full extent.
Brentford tried again, but luck was not on Bryan Mbeumo’s side as the forward hit the woodwork seven times last season and was out of luck again when his volley hit the crossbar.
The opportunity brought Brentford to life, and they soon added to their 10 goals at home this season when Onyeka clipped Toney, before the Bees captain produced a deft backheel into the bottom corner.
The second half
Brentford continued to threaten as the hosts pushed to end their three game winless streak against Brighton and Toney was again at the heart of the Bees’ attack when Joel Veltman brought him down in the penalty area.
The striker confidently stepped forward and made no mistake, sending Brighton goalkeeper Sánchez the wrong way to dispatch his 20th consecutive penalty shot for Brentford.
Brighton naturally controlled possession to try and win the match back, but Brentford sealed the win after back-to-back defeats.
In contrast, Brighton’s lack of cutting edge was clear as the Seagulls have lost to nil in their last two games as De Zerbi’s wait for a first Premier League win continues.