Last year's play-off semi-finalists Team Bath and Hertfordshire Mavericks started the 2015 Superleague season with victories.
Mavericks beat Celtic Dragons 54-39 while Bath battled to a 49-33 win over Team Northumbria on Saturday.
Yorkshire Jets finished round one as the highest points scorers, winning 70-44 against Loughborough, who lost all their games in the 2014 season.
Round two starts on Monday, with the Dragons hosting Northumbria.
The remaining second-week fixtures will be played on 7 February, with Hertfordshire against Loughborough and Surrey Storm at home to Yorkshire.
Champions Manchester Thunder also return to action on Saturday, after their opening win over Storm, when they host Bath.
|Superleague 2015 - Round one results|
|26 Jan - Manchester Thunder 55-52 Surrey Storm||30 Jan - Yorkshire Jets 70-44 Loughborough Lightning|
|31 Jan - Team Northumbria 33-49 Team Bath||31 Jan - Celtic Dragons 39-54 Hertfordshire Mavericks|
|Superleague 2015 - Round two fixtures|
|02 February - Celtic Dragons v Team Northumbria||07 Feb - Hertfordshire Mavericks v Loughborough|
|07 Feb - Manchester Thunder v Team Bath||07 Feb - Surrey Storm v Yorkshire Jets|