Newcastle ran in 11 tries to record a comprehensive 71-10 win over Spanish side Cetransa in Pool Three of the European Challenge Cup on Saturday.
Falcons centre Mathew Tait was in awesome form, while his brother Alex and Ollie Phillips grabbed hat-tricks.
Worcester struggled to an 18-8 win over Romania's Bucuresti, Pat Sanderson and Marcel Garvey grabbing the tries on a waterlogged pitch.
Butch James enjoyed a good start to his Bath career as they won 28-6 in Auch.
The South African World Cup-winning fly-half settled quickly into the number 10 jersey, his tackle-busting run in the 18th minute setting his team on the way to victory in France.
His pinpoint cross-kick then put back row Andrew Beattie in for an easy try.
Olly Barkley chipped in with 11 points, but Auch did not help themselves as hooker Nicolas Sentous and winger Raphael Bastide were both sin-binned early in the second half.
Bath then duly extended their lead with a penalty try but were unable to chalk up a bonus point in arguably the tournament's easiest pool.
On Friday, Leeds shrugged off their Premiership blues to take pole position in Pool Five with a 35-18 win over Castres.
After only one win in six Premiership games, the English club scored five tries against their French visitors, with scrum-half Joe Bedford, hooker Viliami Ma'asi, centre Andy Tuilagi, Calum Clark and Tom Biggs all on the scoresheet.
With home-and-away matches against Calvisano and Dax to come, Stuart Lancaster's side have a great chance of claiming a berth in the quarter-finals.
But Irish province Connacht lost their opening match 15-6 in France to Brive.
Luciano Orquera kicked four penalty goals for the hosts, with Tim Donnelly and replacement Peter Durcan kicking goals in either half for the visitors, who lost replacement Colm Rigney to the sin-bin in the dying minutes.
Connacht already have an uphill task to qualify with home and away games against Newcastle to come.